Post a reply

Username

Subject

Message body

Font colour:

Font size:

[quote="juliensalmon@..."]<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Invalid access to memory.

Stack trace:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(000B51E0) ntdll.dll
(000B51AF) ntdll.dll
(0006CC4E) ntdll.dll
(0007962A) ntdll.dll
(0013F0FA) TCustomCommandType::LoadExtension
(000370EA) gdi32full.dll
(0003711E) gdi32full.dll
(00094F99) ntdll.dll
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(00040403) USER32.dll
(00027541) USER32.dll
(000002AA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(00040821) TCustomScpExplorerForm::Dispatch
(00092B4D) ntdll.dll
(00050714) ntdll.dll
(0002AE8A) UXTHEME.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(0003FEDD) ntdll.dll
(003CF515) Vcl::Controls::TWinControl::WndProc
(000D1BFA) InProcessClient32.dll
(00026580) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00BD6540) C4923_0
(0009F4D1) InProcessClient32.dll
(0009F359) InProcessClient32.dll
(00028229) USER32.dll
(00094F99) ntdll.dll
(00040CCA) ntdll.dll
(00023AF9) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00038CC1) USER32.dll
(00027D78) USER32.dll
(00027A63) USER32.dll
(00027E79) USER32.dll
(0002781B) USER32.dll
(000C35C7) USER32.dll
(00079604) ntdll.dll
(000001AA) win32u.dll
(00031AC5) USER32.dll
(00027D78) USER32.dll
(000319BC) USER32.dll
(00027E79) USER32.dll
(000A56E0) InProcessClient32.dll
(000A57E1) InProcessClient32.dll
(000A5634) InProcessClient32.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDAB2) Vcl::Forms::TApplication::ProcessMessages
(008E770F) TDriveView::ReadSubDirs
(0054A8DB) Driveviewint::TDriveViewInt::CallBackValidateDir
(00027A63) USER32.dll
(00027E79) USER32.dll
(0002781B) USER32.dll
(000329D7) USER32.dll
(0007727A) ntdll.dll
(000329EB) USER32.dll
(00079604) ntdll.dll
(000001EA) win32u.dll
(000290BB) USER32.dll
(00040403) USER32.dll
(00027541) USER32.dll
(00434195) Vcl::Comctrls::TTreeNode::GetChildren
(005397FE) Customdriveview::_16447
(0053986D) Customdriveview::TCustomDriveView::IterateSubTree
(0054ABDA) Driveviewint::TDriveViewInt::ValidateDirectoryEx
(005396EB) Customdriveview::TCustomDriveView::ValidateDirectory
(0054B183) Driveviewint::TDriveViewInt::ChangeTimerOnTimer
(00479627) Vcl::Extctrls::TTimer::Timer
(00479507) Vcl::Extctrls::TTimer::WndProc
(00235394) System::Classes::_18364
(00038CC1) USER32.dll
(00027D78) USER32.dll
(00027A63) USER32.dll
(000A575B) InProcessClient32.dll
(00026D45) USER32.dll
(000268AB) USER32.dll
(004DDA87) Vcl::Forms::TApplication::ProcessMessage
(004DDACA) Vcl::Forms::TApplication:%3

The problem happens rarely. I cannot reproduce it.
[/quote]

Options

Disable BBCode in this post

Notify me when a reply is posted (registered users only)

Add an Attachment

If you do not want to add an Attachment to your Post, please leave the Fields blank.

Filename

(maximum 10 MB; please compress large files; only common media, archive, text and programming file formats are allowed)

File Comment

Options

Private file (available to author and site moderators only)

Topic review

r.pelzer@...

Unzulässiger Zugriff auf einen Speicherbereich - Vcl::Comctrls::TListColumn::DoChange

2026-11-14 10:12

Reactivating Win11 after suspend to disk:

WinSCP 6.7

Error message:
Unzulässiger Zugriff auf einen Speicherbereich.

Stapelverfolgung:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(000B9290) ntdll.dll
(000B925F) ntdll.dll
(0006CD7E) ntdll.dll
(0007973A) ntdll.dll
(0003712A) gdi32full.dll
(003A9A95) Vcl::Graphics::TCustomCanvas::TextHeight
(005229B6) Pastools::_16426
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(00040B53) USER32.dll
(00027AE1) USER32.dll
(000002AA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(0002AD07) USER32.dll
(0002AD41) USER32.dll
(0002AD1C) USER32.dll
(000383E7) ntdll.dll
(00040821) TCustomScpExplorerForm::Dispatch
(0002AEDA) UXTHEME.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(00094C59) ntdll.dll
(00050814) ntdll.dll
(00050275) ntdll.dll
(000506C7) ntdll.dll
(003CF515) Vcl::Controls::TWinControl::WndProc
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(0003AB20) UXTHEME.DLL
(00BD6540) C4923_0
(00038DF2) UXTHEME.DLL
(000287C9) USER32.dll
(000006FA) win32u.dll
(00026E24) USER32.dll
(00040DCA) ntdll.dll
(00023A87) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(0003933D) USER32.dll
(00028318) USER32.dll
(00028003) USER32.dll
(00028419) USER32.dll
(00027DBB) USER32.dll
(000C9367) USER32.dll
(00079714) ntdll.dll
(000001AA) win32u.dll
(000323C5) USER32.dll
(000322BC) USER32.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDAB2) Vcl::Forms::TApplication::ProcessMessages
(008E770F) TDriveView::ReadSubDirs
(0054A8DB) Driveviewint::TDriveViewInt::CallBackValidateDir
(00028003) USER32.dll
(00028419) USER32.dll
(00027DBB) USER32.dll
(000332E7) USER32.dll
(0007738A) ntdll.dll
(000332FB) USER32.dll
(00079714) ntdll.dll
(000001EA) win32u.dll
(0002965B) USER32.dll
(00040B53) USER32.dll
(00027AE1) USER32.dll
(00434195) Vcl::Comctrls::TTreeNode::GetChildren
(005397FE) Customdriveview::_16447
(0053981E) Customdriveview::_16447
(0053986D) Customdriveview::TCustomDriveView::IterateSubTree
(0054ABDA) Driveviewint::TDriveViewInt::ValidateDirectoryEx
(005396EB) Customdriveview::TCustomDriveView::ValidateDirectory
(0054B183) Driveviewint::TDriveViewInt::ChangeTimerOnTimer
(00479627) Vcl::Extctrls::TTimer::Timer
(00479507) Vcl::Extctrls::TTimer::WndProc
(00235394) System::Classes::_18364
(0003933D) USER32.dll
(00028318) USER32.dll
(00028003) USER32.dll
(0007738A) ntdll.dll
(00033C5E) USER32.dll
(000272E5) USER32.dll
(00026E4B) USER32.dll
(004DDA87) Vcl::Forms::TApplication::ProcessMessage
(004DDACA) Vcl::Forms::TApplication::Hand

The problem happens rarely. I cannot reproduce it.

domagoj.peharda@...

Invalid access to memory - Vcl::Comctrls::TListColumn::DoChange

2026-11-12 16:25

Changing the route
<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Invalid access to memory.

Stack trace:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(00B0EFFB) TAboutDialog::GenerateThirdParty
(000B51E0) ntdll.dll
(000B51AF) ntdll.dll
(0006CC4E) ntdll.dll
(0007962A) ntdll.dll
(00027D78) USER32.dll
(000274E5) USER32.dll
(005229B6) Pastools::_16426
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(00040403) USER32.dll
(00027541) USER32.dll
(000002AA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(0002A767) USER32.dll
(0002A7A1) USER32.dll
(0002A77C) USER32.dll
(000382E7) ntdll.dll
(00040821) TCustomScpExplorerForm::Dispatch
(0002AE8A) UXTHEME.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(003CF515) Vcl::Controls::TWinControl::WndProc
(00037F66) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00038870) UXTHEME.DLL
(00BD6540) C4923_0
(0003FEDD) ntdll.dll
(0003F732) ntdll.dll
(00028229) USER32.dll
(000006FA) win32u.dll
(00026884) USER32.dll
(00040CCA) ntdll.dll
(00023AF9) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00038CC1) USER32.dll
(00027D78) USER32.dll
(00027A63) USER32.dll
(00027E79) USER32.dll
(0002781B) USER32.dll
(000C35C7) USER32.dll
(00079604) ntdll.dll
(00031AC5) USER32.dll
(000319BC) USER32.dll
(0015D76D) KERNELBASE.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDAB2) Vcl::Forms::TApplication::ProcessMessages
(000E7406) TTerminalManager::TerminalThreadIdle
(009A5F77) TTerminalThread::CompleteAction
(00C4B921) __internal_malloc
(009A6313) TTerminalThread::TerminalReopen
(000E7604) TTerminalManager::DoConnectTerminal
(00169700) System::FreeMem
(0016CB5C) System::UStrClr
(0016B640) System::TMonitor::Destroy
(0016AE45) System::TObject::CleanupInstance
(00169700) System::FreeMem
(000E80F6) TTerminalManager::ConnectActiveTerminalImpl
(00447C49) Vcl::Comctrls::TCustomListView::GetNextItem
(004422CF) Vcl::Comctrls::TListItem::GetCaption
(00536B30) Customdirview::TCustomDirView::SaveState
(00B0EFFB) TAboutDialog::GenerateThirdParty
(000E8FA3) TTerminalManager::ReconnectActiveTerminal
(00103CB2) ShowExtendedExceptionEx
(0002781B) USER32.dll
(000329D7) USER32.dll
(0007727A) ntdll.dll
(00079604) ntdll.dll
(000001EA) win32u.dll
(000290BB) USER32.dll
(00169700) System::FreeMem
(00446F3E) Vcl::Comctrls::TCustomListView::IsEditing
(00045163) TCustomScpExplorerForm::IsBusy
(00C5F061) C7808_0
(00036C5D) TCustomScpExplorerForm::ShowExtendedException
(00A7BBBC) TSessionLog::AddException
(0004CD6B) ntdll.dll
(000E606E) TTerminalManager::TerminalShowExtendedEx

The problem happens rarely. I cannot reproduce it.

martin-roger.jones@...

Unzulässiger Zugriff auf einen Speicherbereich - Vcl::Comctrls::TListColumn::DoChange

2026-11-10 20:36

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Unzulässiger Zugriff auf einen Speicherbereich.

Stapelverfolgung:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(00088260) ntdll.dll
(0008822F) ntdll.dll
(0006892A) ntdll.dll
(00074711) ntdll.dll
(0052298D) Pastools::CalculateTextHeight
(005229AA) Pastools::_16426
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(0003553A) USER32.dll
(0000013A) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(0004BA87) ntdll.dll
(004A24CF) Vcl::Themes::TStyleManager::GetIsCustomStyleActive
(0049B6C5) Vcl::Themes::StyleServices
(00040C09) USER32.dll
(00040821) TCustomScpExplorerForm::Dispatch
(00089CFC) msvcrt.dll
(00089D48) msvcrt.dll
(0003A6F7) USER32.dll
(000006AA) win32u.dll
(003CA36A) Vcl::Controls::TControl::WndProc
(0003164C) UXTHEME.DLL
(003CF515) Vcl::Controls::TWinControl::WndProc
(000000EA) win32u.dll
(0003BEBC) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(0002E168) UXTHEME.DLL
(00BD6540) C4923_0
(00038708) USER32.dll
(000005BA) win32u.dll
(000353D6) USER32.dll
(00038681) USER32.dll
(0005A0B4) ntdll.dll
(00035220) USER32.dll
(0002CC1B) UXTHEME.DLL
(0002C46A) UXTHEME.DLL
(0002C477) UXTHEME.DLL
(0002DD20) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00040C09) USER32.dll
(000372C5) USER32.dll
(000370D8) USER32.dll
(00037509) USER32.dll
(000370D8) USER32.dll
(00036EDB) USER32.dll
(00091103) USER32.dll
(0002BAD7) USER32.dll
(000746CB) ntdll.dll
(0003B674) USER32.dll
(003CD90A) Vcl::Controls::TWinControl::GetControl
(0016BC40) System::TMonitor::TryEnter
(0016B768) System::TMonitor::Enter
(0016B5D0) System::TMonitor::CheckOwningThread
(0016B8F6) System::TMonitor::Exit
(0003B529) USER32.dll
(000000CA) win32u.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDACA) Vcl::Forms::TApplication::HandleMessage
(004DDE09) Vcl::Forms::TApplication::Run
(0015C27B) Execute
(000325C3) UXTHEME.DLL
(000325F0) UXTHEME.DLL
(0002EADF) UXTHEME.DLL
(0002E753) UXTHEME.DLL
(00035F95) USER32.dll
(00035F9D) USER32.dll
(00035F62) USER32.dll
(004DC941) Vcl::Forms::_17039
(004DD1A7) Vcl::Forms::TApplication::WndProc
(00040C09) USER32.dll
(000372C5) USER32.dll
(000370D8) USER32.dll
(00037509) USER32.dll
(00B070FB) TWebDAVFileSystem::Source
(0003A587) USER32.dll
(00C5F8A1) C7890_0
(000048E7) wWinMain
(0016329C) __AfterConstruction
(00BDEDCD) TDesktopFontManager::TDesktopFontManager
(0005F254) ntdll.dll
(00169700) System::FreeMem
(0016CB5C) System::UStrClr
(001696E4) Sys

The problem happens rarely. I cannot reproduce it.

bouhlal@...

Accès mémoire invalide - Vcl::Comctrls::TListColumn::DoChange

2026-11-09 14:26

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Accès mémoire invalide.

Trace de la pile :
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(000B51E0) ntdll.dll
(000B51AF) ntdll.dll
(0006CC4E) ntdll.dll
(0007962A) ntdll.dll
(003A9A95) Vcl::Graphics::TCustomCanvas::TextHeight
(005229B6) Pastools::_16426
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(00040403) USER32.dll
(00027541) USER32.dll
(000002AA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(0002A767) USER32.dll
(0002A7A1) USER32.dll
(0002A77C) USER32.dll
(000382E7) ntdll.dll
(00040821) TCustomScpExplorerForm::Dispatch
(0002AE8A) UXTHEME.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(00094F99) ntdll.dll
(00050714) ntdll.dll
(00050175) ntdll.dll
(000505C7) ntdll.dll
(003CF515) Vcl::Controls::TWinControl::WndProc
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00038870) UXTHEME.DLL
(00BD6540) C4923_0
(000372A5) UXTHEME.DLL
(00028229) USER32.dll
(000006FA) win32u.dll
(00026884) USER32.dll
(00040CCA) ntdll.dll
(00023AF9) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00038CC1) USER32.dll
(00027D78) USER32.dll
(00027A63) USER32.dll
(00027E79) USER32.dll
(0002781B) USER32.dll
(000C35C7) USER32.dll
(00079604) ntdll.dll
(000001EA) win32u.dll
(0002A85B) USER32.dll
(00028229) USER32.dll
(00073770) USER32.dll
(0002A638) USER32.dll
(0002B529) UXTHEME.DLL
(0005190F) UXTHEME.DLL
(00027153) UXTHEME.DLL
(00027E12) USER32.dll
(00026383) UXTHEME.DLL
(0002A767) USER32.dll
(00038CC1) USER32.dll
(00027D78) USER32.dll
(00027A63) USER32.dll
(00027F12) USER32.dll
(003D2741) Vcl::Controls::TWinControl::GetHandle
(004D6063) Vcl::Forms::TCustomForm::SetWindowFocus
(00BD68EB) C4923_0
(000274E5) USER32.dll
(00027E79) USER32.dll
(003CF61D) Vcl::Controls::TWinControl::DefaultHandler
(004D5B66) Vcl::Forms::TCustomForm::DefaultHandler
(003D1349) Vcl::Controls::TWinControl::WMSysCommand
(004D7135) Vcl::Forms::TCustomForm::WMSysCommand
(00040898) TCustomScpExplorerForm::Dispatch
(0016CB5C) System::UStrClr
(0039CF31) System::Internal::Strhlpr::UnicodeFree
(003CA36A) Vcl::Controls::TControl::WndProc
(003CF515) Vcl::Controls::TWinControl::WndProc
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(004D3701) Vcl::Forms::TCustomForm::WndProc
(00BD68EB) C4923_0
(0016E9AA) System::FinalizeRecord
(0016B3A2) System::ClassDestroy
(0016B640) System::TMonitor::Destroy
(00073770) USER32.dll
(003CF515) Vcl::Controls::TWinControl::WndProc
(00037A1F) USER32.dll
(004D314B) Vcl::

The problem happens rarely. I cannot reproduce it.

martin

Re: Invalid access to memory - Vcl::Comctrls::TListColumn::DoChange

2026-11-09

@spark43502: Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.

pedro.valladares@...

Invalid access to memory - Vcl::Comctrls::TListColumn::DoChange

2026-11-06 14:04

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Invalid access to memory.

Stack trace:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(000B51E0) ntdll.dll
(000B51AF) ntdll.dll
(0006CC4E) ntdll.dll
(0007962A) ntdll.dll
(0003F732) ntdll.dll
(00094F99) ntdll.dll
(00050714) ntdll.dll
(00037096) gdi32full.dll
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(00040403) USER32.dll
(00027541) USER32.dll
(000002AA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(0002A767) USER32.dll
(0002A7A1) USER32.dll
(0002A77C) USER32.dll
(000382E7) ntdll.dll
(00040821) TCustomScpExplorerForm::Dispatch
(0002AE8A) UXTHEME.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(003CF515) Vcl::Controls::TWinControl::WndProc
(00037F66) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00038870) UXTHEME.DLL
(00BD6540) C4923_0
(0003FEDD) ntdll.dll
(0003F732) ntdll.dll
(00028229) USER32.dll
(000006FA) win32u.dll
(00026884) USER32.dll
(00040CCA) ntdll.dll
(00023AF9) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00038CC1) USER32.dll
(00027D78) USER32.dll
(00027A63) USER32.dll
(0016B8F6) System::TMonitor::Exit
(0002781B) USER32.dll
(000C35C7) USER32.dll
(00079604) ntdll.dll
(000001AA) win32u.dll
(00031AC5) USER32.dll
(000319BC) USER32.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDACA) Vcl::Forms::TApplication::HandleMessage
(003D2741) Vcl::Controls::TWinControl::GetHandle
(004D8C2E) Vcl::Forms::TCustomForm::ShowModal
(00B7F297) TMessageForm::ShowModal
(00149C3D) ExecuteMessageDialog
(0014B546) MoreMessageDialog
(00162019) System::UnicodeString::UnicodeString
(0039CF31) System::Internal::Strhlpr::UnicodeFree
(0014CA5B) ExceptionMessageDialog
(0014932D) TMessageParams::TMessageParams
(0014CE50) FatalExceptionMessageDialog
(001491C1) TMessageParams::Reset
(00161FAB) System::UnicodeString::~UnicodeString
(00103B82) ShowExtendedExceptionEx
(00161FAB) System::UnicodeString::~UnicodeString
(0016AAD2) KERNELBASE.dll
(0016AADE) KERNELBASE.dll
(00069070) TScpCommanderForm::UpdateControls
(00169700) System::FreeMem
(0016CB5C) System::UStrClr
(0039CF31) System::Internal::Strhlpr::UnicodeFree
(00161FAB) System::UnicodeString::~UnicodeString
(00A7A46F) TSessionLog::Add
(00161FAB) System::UnicodeString::~UnicodeString
(00036C5D) TCustomScpExplorerForm::ShowExtendedException
(00A7BBBC) TSessionLog::AddException
(00C4B921) __internal_malloc
(000E606E) TTerminalManager::TerminalShowExtendedException
(00AC59D3) TTerminal::ShowExtendedException
(000E8221) TTerminalManager::ConnectActiveTerminalImpl
(00447C49) Vcl::Comct

The problem happens rarely. I cannot reproduce it.

spark43502@...

Invalid access to memory - Vcl::Comctrls::TListColumn::DoChange

2026-11-06 13:38

WinSCP is left open overnight. When I log onto my laptop in the morning, I see this message. It has been happening every day since I installed the last update for WinSCP, Build 17845 2026-10-14. I have a tab open connected to an RHEL 10 server when this is happening.

WinSCP 6.7

Error message:
Invalid access to memory.

Stack trace:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(00099A50) ntdll.dll
(00099A1F) ntdll.dll
(0006C3C1) ntdll.dll
(00078491) ntdll.dll
(000328AD) USER32.dll
(005229B6) Pastools::_16426
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(00021CD1) USER32.dll
(000001CA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(00026F43) UXTHEME.DLL
(0001FEE7) USER32.dll
(000465A7) ntdll.dll
(00040821) TCustomScpExplorerForm::Dispatch
(000328AD) USER32.dll
(003CA36A) Vcl::Controls::TControl::WndProc
(003CF515) Vcl::Controls::TWinControl::WndProc
(00031B46) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00BD6540) C4923_0
(0003C6D5) UXTHEME.DLL
(0003D4A7) UXTHEME.DLL
(0003C6D5) UXTHEME.DLL
(0001DC8A) USER32.dll
(0000061A) win32u.dll
(0001E696) USER32.dll
(0005F954) ntdll.dll
(000296DF) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(000328AD) USER32.dll
(000232A1) USER32.dll
(00022F54) USER32.dll
(00023392) USER32.dll
(00570176) Tb2hook::_16395
(00022D1B) USER32.dll
(00095EC7) USER32.dll
(0007844B) ntdll.dll
(000000CA) win32u.dll
(0002BEC9) USER32.dll
(0016BC40) System::TMonitor::TryEnter
(0016B768) System::TMonitor::Enter
(0016B5D0) System::TMonitor::CheckOwningThread
(0016B8F6) System::TMonitor::Exit
(0002BDBD) USER32.dll
(0000015A) win32u.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDACA) Vcl::Forms::TApplication::HandleMessage
(004DDE09) Vcl::Forms::TApplication::Run
(0015C27B) Execute
(0001FEE7) USER32.dll
(0001FF21) USER32.dll
(0001FEFC) USER32.dll
(004DC941) Vcl::Forms::_17039
(000328AD) USER32.dll
(000232A1) USER32.dll
(0002339B) USER32.dll
(00022F54) USER32.dll
(00023392) USER32.dll
(0005F954) ntdll.dll
(00901143) GetPersonalFolder
(000048E7) wWinMain
(0016329C) __AfterConstruction
(00BDEDCD) TDesktopFontManager::TDesktopFontManager
(000597D1) ntdll.dll
(0016CB5C) System::UStrClr
(001696E4) System::GetMem
(0016CAA2) System::NewUnicodeString
(0016DBDB) System::UStrSetLength
(0016DC23) System::UStrCat
(00060D5D) ntdll.dll
(00C476C1) __Mtxinit
(00C47734) __Mtxunlock
(000597D1) ntdll.dll
(00C47A43) __Unlocksyslock
(00C5FE23) __unlock_exit
(002EB880) System::Syncobjs::TCriticalSection::TCriticalSection
(00C5E66D) _atexit
(000A772B) C13_7
(00C5FCA4) __init_exit_proc
(00C5FFED) C7910_0
(00016BA7) KERNEL32.DLL
(0006B3A9) ntdll.dll
(0006B32A) ntdll.dll

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.

reyn.mito@...

Invalid access to memory - Vcl::Comctrls::TListColumn::DoChange

2026-11-05 22:53

had two sessions open, walked away for lunch, came back to error message.

WinSCP 6.7

Error message:
Invalid access to memory.

Stack trace:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(00C63D3A) ____ExceptionHandler
(00099B20) ntdll.dll
(00099AEF) ntdll.dll
(0006C451) ntdll.dll
(00078511) ntdll.dll
(003A9A95) Vcl::Graphics::TCustomCanvas::TextHeight
(0052298D) Pastools::CalculateTextHeight
(005229AA) Pastools::_16426
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(00021C71) USER32.dll
(000001CA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(00026F53) UXTHEME.DLL
(0001FE87) USER32.dll
(00046637) ntdll.dll
(00040821) TCustomScpExplorerForm::Dispatch
(0003294D) USER32.dll
(003CA36A) Vcl::Controls::TControl::WndProc
(003CF515) Vcl::Controls::TWinControl::WndProc
(00031BE6) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00BD6540) C4923_0
(0003C6D5) UXTHEME.DLL
(0003D4A7) UXTHEME.DLL
(0003C6D5) UXTHEME.DLL
(0001DC2A) USER32.dll
(0000061A) win32u.dll
(0001E636) USER32.dll
(0005F9E4) ntdll.dll
(000296EF) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(0003294D) USER32.dll
(00023241) USER32.dll
(00022EF4) USER32.dll
(00023332) USER32.dll
(00570176) Tb2hook::_16395
(00022CBB) USER32.dll
(00095CB7) USER32.dll
(000784CB) ntdll.dll
(0002BF69) USER32.dll
(0002BE5D) USER32.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDACA) Vcl::Forms::TApplication::HandleMessage
(004DDE09) Vcl::Forms::TApplication::Run
(0015C27B) Execute
(00027DA2) UXTHEME.DLL
(0001FE87) USER32.dll
(0001FEC1) USER32.dll
(0001FE9C) USER32.dll
(004DC941) Vcl::Forms::_17039
(00023241) USER32.dll
(000232D4) USER32.dll
(00022EF4) USER32.dll
(0005F9E4) ntdll.dll
(00127E4A) KERNELBASE.dll
(0046F0FB) Vcl::Dialogs::_16854
(000048E7) wWinMain
(0016329C) __AfterConstruction
(00BDEDCD) TDesktopFontManager::TDesktopFontManager
(00059861) ntdll.dll
(00169700) System::FreeMem
(0016CB5C) System::UStrClr
(001696E4) System::GetMem
(0016CAA2) System::NewUnicodeString
(0016DBDB) System::UStrSetLength
(0016DC23) System::UStrCat
(00C4B921) __internal_malloc
(00060DED) ntdll.dll
(00C476C1) __Mtxinit
(00059861) ntdll.dll
(00C47A43) __Unlocksyslock
(00C5FE23) __unlock_exit
(002EB880) System::Syncobjs::TCriticalSection::TCriticalSection
(00C5E66D) _atexit
(000A772B) C13_7
(00C5FCA4) __init_exit_proc
(00C5FFED) C7910_0
(00016BA7) KERNEL32.DLL
(0006B439) ntdll.dll
(0006B3BA) ntdll.dll

The problem happens rarely. I cannot reproduce it.

michael@...

Invalid access to memory - Vcl::Comctrls::TListColumn::DoChange

2026-11-04 22:41

Error happened while moving window across monitors in a Remote Desktop session.

WinSCP 6.7

Error message:
Invalid access to memory.

Stack trace:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(00099AD0) ntdll.dll
(00099A9F) ntdll.dll
(0006C451) ntdll.dll
(00078511) ntdll.dll
(00022EF4) USER32.dll
(00023332) USER32.dll
(00022CBB) USER32.dll
(0052298D) Pastools::CalculateTextHeight
(005229AA) Pastools::_16426
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(00021C71) USER32.dll
(000001CA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(00046637) ntdll.dll
(0049B6C5) Vcl::Themes::StyleServices
(0003284D) USER32.dll
(00040821) TCustomScpExplorerForm::Dispatch
(00023241) USER32.dll
(000232D4) USER32.dll
(003CA36A) Vcl::Controls::TControl::WndProc
(003CF515) Vcl::Controls::TWinControl::WndProc
(00031AE6) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00BD6540) C4923_0
(0003C6D5) UXTHEME.DLL
(0003D4A7) UXTHEME.DLL
(0003C6D5) UXTHEME.DLL
(0001DC2A) USER32.dll
(0000061A) win32u.dll
(0001E636) USER32.dll
(0005F9E4) ntdll.dll
(000296EF) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(0003284D) USER32.dll
(00023241) USER32.dll
(00022EF4) USER32.dll
(00570176) Tb2hook::_16395
(00022CBB) USER32.dll
(00095B87) USER32.dll
(000784CB) ntdll.dll
(0000010A) win32u.dll
(0001FF7F) USER32.dll
(0001DC2A) USER32.dll
(0001FD57) USER32.dll
(0002BE59) UXTHEME.DLL
(000575EF) UXTHEME.DLL
(00027D34) UXTHEME.DLL
(00026F53) UXTHEME.DLL
(0001FE87) USER32.dll
(0003284D) USER32.dll
(00023241) USER32.dll
(00022EF4) USER32.dll
(00067CB4) ntdll.dll
(00067ED2) ntdll.dll
(00093AD5) COMCTL32.DLL
(00022B02) USER32.dll
(003CF61D) Vcl::Controls::TWinControl::DefaultHandler
(004D5B66) Vcl::Forms::TCustomForm::DefaultHandler
(003D1349) Vcl::Controls::TWinControl::WMSysCommand
(004D7135) Vcl::Forms::TCustomForm::WMSysCommand
(00040898) TCustomScpExplorerForm::Dispatch
(00039910) USER32.dll
(00093338) COMCTL32.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(00091BF2) COMCTL32.DLL
(0003284D) USER32.dll
(00023241) USER32.dll
(0002333B) USER32.dll
(000232D4) USER32.dll
(00022EF4) USER32.dll
(00039910) USER32.dll
(0001DCB2) USER32.dll
(0001D911) USER32.dll
(00046637) ntdll.dll
(003CF515) Vcl::Controls::TWinControl::WndProc
(0003284D) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00BD68E3) C4923_0
(00022EF4) USER32.dll
(00023332) USER32.dll
(0001DC2A) USER32.dll
(0001D911) USER32.dll
(0005F9E4) ntdll.dll
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classe

The problem happens rarely. I cannot reproduce it.

jfrussell@...

Invalid access to memory - Vcl::Comctrls::TListColumn::DoChange

2026-11-04 05:33

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Invalid access to memory.

Stack trace:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(000B51E0) ntdll.dll
(000B51AF) ntdll.dll
(0006CC4E) ntdll.dll
(0007962A) ntdll.dll
(0003B4D1) gdi32full.dll
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(003D294F) Vcl::Controls::TWinControl::GetClientRect
(003CD3C7) Vcl::Controls::TWinControl::AlignControl
(000002AA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(0001B100) atcuf32.dll
(00040821) TCustomScpExplorerForm::Dispatch
(00023ADA) UXTHEME.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(000146B1) bdhkm32.dll
(00011D82) bdhkm32.dll
(00011DA0) bdhkm32.dll
(00023ADA) UXTHEME.DLL
(003CF515) Vcl::Controls::TWinControl::WndProc
(00023ADA) UXTHEME.DLL
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00023ADA) UXTHEME.DLL
(00BD6540) C4923_0
(00023ADA) UXTHEME.DLL
(0003F732) ntdll.dll
(00028229) USER32.dll
(00094F99) ntdll.dll
(000456AB) ntdll.dll
(0006E895) USER32.dll
(00027F12) USER32.dll
(00040CCA) ntdll.dll
(00023AF9) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00038CC1) USER32.dll
(00027D78) USER32.dll
(00027A63) USER32.dll
(0002781B) USER32.dll
(000C35C7) USER32.dll
(00079604) ntdll.dll
(000001AA) win32u.dll
(00031AC5) USER32.dll
(00021160) atcuf32.dll
(000319BC) USER32.dll
(00000578) bdhkm32.dll
(0001678D) bdhkm32.dll
(00011D54) bdhkm32.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(00073770) USER32.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(00027683) USER32.dll
(0016BC40) System::TMonitor::TryEnter
(0016B768) System::TMonitor::Enter
(0016B5D0) System::TMonitor::CheckOwningThread
(0016B8F6) System::TMonitor::Exit
(0016B952) System::TMonitor::Exit
(00231604) System::Classes::CheckSynchronize
(004DE915) Vcl::Forms::TApplication::DoActionIdle
(004DEA70) Vcl::Forms::TApplication::Idle
(0000023A) win32u.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDACA) Vcl::Forms::TApplication::HandleMessage
(003D2741) Vcl::Controls::TWinControl::GetHandle
(004D8C2E) Vcl::Forms::TCustomForm::ShowModal
(00B7F297) TMessageForm::ShowModal
(00149C3D) ExecuteMessageDialog
(00161E99) System::UnicodeString::ThrowIfOutOfRange
(0039CF31) System::Internal::Strhlpr::UnicodeFree
(00161FAB) System::UnicodeString::~UnicodeString
(0014B546) MoreMessageDialog
(001491C1) TMessageParams::Reset
(0014B847) MessageDialog
(0016CB5C) System::UStrClr
(0039CEA9) System::Internal::Strhlpr::UnicodeFromPChar
(00030796) TCustomS

The problem happens rarely. I cannot reproduce it.

rikiya.tanaka@...

メモリのアクセス違反 - Vcl::Comctrls::TListColumn::DoChange

2026-11-04 04:49

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
メモリのアクセス違反

スタックトレース:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(000B51E0) ntdll.dll
(000B51AF) ntdll.dll
(0006CC4E) ntdll.dll
(0007962A) ntdll.dll
(00027D78) USER32.dll
(00027E82) USER32.dll
(00027E12) USER32.dll
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(00040403) USER32.dll
(00027541) USER32.dll
(000002AA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(0002A767) USER32.dll
(0002A7A1) USER32.dll
(0002A77C) USER32.dll
(000382E7) ntdll.dll
(00040821) TCustomScpExplorerForm::Dispatch
(0002AE8A) UXTHEME.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(003CF515) Vcl::Controls::TWinControl::WndProc
(00037F66) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00038870) UXTHEME.DLL
(00BD6540) C4923_0
(0003FEDD) ntdll.dll
(0003F732) ntdll.dll
(00028229) USER32.dll
(000006FA) win32u.dll
(00026884) USER32.dll
(00040CCA) ntdll.dll
(00023AF9) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(004AF073) System::Generics::Collections::TDictionary__2<System::UnicodeString, Vcl::Themes::TStyleManager::TSourceInfo>::TValueCollection::TValueCollection
(00038CC1) USER32.dll
(004AF073) System::Generics::Collections::TDictionary__2<System::UnicodeString, Vcl::Themes::TStyleManager::TSourceInfo>::TValueCollection::TValueCollection
(00027D78) USER32.dll
(004AF073) System::Generics::Collections::TDictionary__2<System::UnicodeString, Vcl::Themes::TStyleManager::TSourceInfo>::TValueCollection::TValueCollection
(00027A63) USER32.dll
(0002781B) USER32.dll
(004AF073) System::Generics::Collections::TDictionary__2<System::UnicodeString, Vcl::Themes::TStyleManager::TSourceInfo>::TValueCollection::TValueCollection
(000C35C7) USER32.dll
(004AF073) System::Generics::Collections::TDictionary__2<System::UnicodeString, Vcl::Themes::TStyleManager::TSourceInfo>::TValueCollection::TValueCollection
(00079604) ntdll.dll
(004AF073) System::Generics::Collections::TDictionary__2<System::UnicodeString, Vcl::Themes::TStyleManager::TSourceInfo>::TValueCollection::TValueCollection
(000001EA) win32u.dll
(0002A85B) USER32.dll
(00028229) USER32.dll
(00073770) USER32.dll
(0002A638) USER32.dll
(0002B529) UXTHEME.DLL
(0005190F) UXTHEME.DLL
(00027153) UXTHEME.DLL
(00082AB9) COMCTL32.DLL
(00026383) UXTHEME.DLL
(0002A767) USER32.dll
(00082AB9) COMCTL32.DLL
(00038CC1) USER32.dll
(00027D78) USER32.dll
(00027A63) USER32.dll
(000382E7) ntdll.dll
(00038CC1) USER32.dll
(00027D78) USER32.dll
(00027E

The problem happens rarely. I cannot reproduce it.

xavier.frank@...

Accès mémoire invalide - Vcl::Comctrls::TListColumn::DoChange

2026-11-03 17:23

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Accès mémoire invalide.

Trace de la pile :
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(000B51E0) ntdll.dll
(000B51AF) ntdll.dll
(0006CC4E) ntdll.dll
(0007962A) ntdll.dll
(00050714) ntdll.dll
(003A9A95) Vcl::Graphics::TCustomCanvas::TextHeight
(005229B6) Pastools::_16426
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(00040403) USER32.dll
(00027541) USER32.dll
(000002AA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(0002A767) USER32.dll
(0002A7A1) USER32.dll
(0002A77C) USER32.dll
(000382E7) ntdll.dll
(00040821) TCustomScpExplorerForm::Dispatch
(0002AE8A) UXTHEME.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(00094F99) ntdll.dll
(00050714) ntdll.dll
(00050175) ntdll.dll
(000505C7) ntdll.dll
(003CF515) Vcl::Controls::TWinControl::WndProc
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00038870) UXTHEME.DLL
(00BD6540) C4923_0
(000372A5) UXTHEME.DLL
(00028229) USER32.dll
(000006FA) win32u.dll
(00026884) USER32.dll
(00040CCA) ntdll.dll
(00023AF9) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00038CC1) USER32.dll
(00027D78) USER32.dll
(00027A63) USER32.dll
(00027E79) USER32.dll
(0002781B) USER32.dll
(000C35C7) USER32.dll
(00079604) ntdll.dll
(000001AA) win32u.dll
(00031AC5) USER32.dll
(000319BC) USER32.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDACA) Vcl::Forms::TApplication::HandleMessage
(003D2741) Vcl::Controls::TWinControl::GetHandle
(004D8C2E) Vcl::Forms::TCustomForm::ShowModal
(00B7F297) TMessageForm::ShowModal
(00149C3D) ExecuteMessageDialog
(0014B546) MoreMessageDialog
(00162019) System::UnicodeString::UnicodeString
(0039CF31) System::Internal::Strhlpr::UnicodeFree
(0014CA5B) ExceptionMessageDialog
(0014932D) TMessageParams::TMessageParams
(0014CE50) FatalExceptionMessageDialog
(001491C1) TMessageParams::Reset
(00161FAB) System::UnicodeString::~UnicodeString
(0039CF31) System::Internal::Strhlpr::UnicodeFree
(00103B82) ShowExtendedExceptionEx
(0002781B) USER32.dll
(000329D7) USER32.dll
(0007727A) ntdll.dll
(00079604) ntdll.dll
(000001EA) win32u.dll
(000290BB) USER32.dll
(00169700) System::FreeMem
(00446F3E) Vcl::Comctrls::TCustomListView::IsEditing
(00045163) TCustomScpExplorerForm::IsBusy
(00036C5D) TCustomScpExplorerForm::ShowExtendedException
(00A7BBBC) TSessionLog::AddException
(0004CD6B) ntdll.dll
(000E606E) TTerminalManager::TerminalShowExtendedException
(00AC59D3) TTerminal::ShowExtendedException
(0016DB90) System::UStrSetLength
(000E4EDC) TTerminalManager:%

The problem happens rarely. I cannot reproduce it.

martin

Re: Ошибка доступа к памяти - Vcl::Comctrls::TListColumn::DoChange

2026-11-03

@liteshock: Thanks for your report. I have fixed it.

tlueders@...

Unzulässiger Zugriff auf einen Speicherbereich - Vcl::Comctrls::TListColumn::DoChange

2026-11-03 13:43

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Unzulässiger Zugriff auf einen Speicherbereich.

Stapelverfolgung:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(000B9290) ntdll.dll
(000B925F) ntdll.dll
(0006CD7E) ntdll.dll
(0007973A) ntdll.dll
(00028318) USER32.dll
(00027A85) USER32.dll
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(00040B53) USER32.dll
(00027AE1) USER32.dll
(000002AA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(004A24CF) Vcl::Themes::TStyleManager::GetIsCustomStyleActive
(004A24A4) Vcl::Themes::TStyleManager::IsCustomStyleAvailable
(0003933D) USER32.dll
(00040821) TCustomScpExplorerForm::Dispatch
(00028422) USER32.dll
(0002AEAA) UXTHEME.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(003CF515) Vcl::Controls::TWinControl::WndProc
(000385D6) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(0003AAF0) UXTHEME.DLL
(00BD6540) C4923_0
(0003FFDD) ntdll.dll
(0003F832) ntdll.dll
(000287C9) USER32.dll
(000006FA) win32u.dll
(00026E24) USER32.dll
(00040DCA) ntdll.dll
(00023A77) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(0003933D) USER32.dll
(00028318) USER32.dll
(00028003) USER32.dll
(00027DBB) USER32.dll
(000C9367) USER32.dll
(00079714) ntdll.dll
(000001AA) win32u.dll
(000323C5) USER32.dll
(0016BC40) System::TMonitor::TryEnter
(0016B768) System::TMonitor::Enter
(0016B5D0) System::TMonitor::CheckOwningThread
(0016B8F6) System::TMonitor::Exit
(000322BC) USER32.dll
(0000023A) win32u.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDACA) Vcl::Forms::TApplication::HandleMessage
(004DDE09) Vcl::Forms::TApplication::Run
(0015C27B) Execute
(0002819F) ntdll.dll
(0002AD41) USER32.dll
(0002AD1C) USER32.dll
(000B4068) ntdll.dll
(004DC941) Vcl::Forms::_17039
(004DD1A7) Vcl::Forms::TApplication::WndProc
(00028422) USER32.dll
(000283B2) USER32.dll
(00028003) USER32.dll
(00028419) USER32.dll
(0001578E) KERNEL32.DLL
(000294A4) USER32.dll
(000048E7) wWinMain
(0016329C) __AfterConstruction
(00BDEDCD) TDesktopFontManager::TDesktopFontManager
(000457AB) ntdll.dll
(001696E4) System::GetMem
(0016CAA2) System::NewUnicodeString
(0016DBDB) System::UStrSetLength
(0016DC23) System::UStrCat
(000607BD) ntdll.dll
(00094C59) ntdll.dll
(00050814) ntdll.dll
(00094C59) ntdll.dll
(00050814) ntdll.dll
(00C5FE23) __unlock_exit
(002EB880) System::Syncobjs::TCriticalSection::TCriticalSection
(00C5E66D) _atexit
(000A772B) C13_7
(00C5FCA4) __init_exit_proc
(00C5FFED) C7910_0
(00C4BA67) ___CRTL_VCL_Init
(0

The problem happens rarely. I cannot reproduce it.

martin

Re: Invalid access to memory - Vcl::Comctrls::TListColumn::DoChange

2026-11-03

@hanikhanafer: Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.

not_valid@...

Invalid access to memory - Vcl::Comctrls::TListColumn::DoChange

2026-11-02 21:08

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Invalid access to memory.

Stack trace:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(00099A50) ntdll.dll
(00099A1F) ntdll.dll
(0006C3C1) ntdll.dll
(00078491) ntdll.dll
(00011DA0) bdhkm32.dll
(005229AA) Pastools::_16426
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(000001CA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(00017C80) atcuf32.dll
(00040821) TCustomScpExplorerForm::Dispatch
(0001DB4A) atcuf32.dll
(000245F6) UXTHEME.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(0001678D) bdhkm32.dll
(000146B1) bdhkm32.dll
(0005F954) ntdll.dll
(00011D82) bdhkm32.dll
(00011DA0) bdhkm32.dll
(000245F6) UXTHEME.DLL
(003CF515) Vcl::Controls::TWinControl::WndProc
(000245F6) UXTHEME.DLL
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(000245F6) UXTHEME.DLL
(00BD6540) C4923_0
(000245F6) UXTHEME.DLL
(0003C6D5) UXTHEME.DLL
(0001DC8A) USER32.dll
(000597D1) ntdll.dll
(0001D971) USER32.dll
(0005F954) ntdll.dll
(0000481A) win32u.dll
(000296DF) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(000328AD) USER32.dll
(000232A1) USER32.dll
(001CBB01) uiautomationcore.dll
(00022F54) USER32.dll
(00022D1B) USER32.dll
(00095EC7) USER32.dll
(0007844B) ntdll.dll
(000000CA) win32u.dll
(0002BEC9) USER32.dll
(0001DD20) atcuf32.dll
(0002BDBD) USER32.dll
(00000578) bdhkm32.dll
(0001678D) bdhkm32.dll
(00011D54) bdhkm32.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(00021AB3) USER32.dll
(0000017A) win32u.dll
(0002CE2C) USER32.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDACA) Vcl::Forms::TApplication::HandleMessage
(004DDE09) Vcl::Forms::TApplication::Run
(0015C27B) Execute
(00027D92) UXTHEME.DLL
(0001FEE7) USER32.dll
(0001FF21) USER32.dll
(0001FEFC) USER32.dll
(004DC941) Vcl::Forms::_17039
(000232A1) USER32.dll
(00023334) USER32.dll
(00022F54) USER32.dll
(0005F954) ntdll.dll
(0012AC7A) KERNELBASE.dll
(000048E7) wWinMain
(0016329C) __AfterConstruction
(00BDEDCD) TDesktopFontManager::TDesktopFontManager
(000597D1) ntdll.dll
(00169700) System::FreeMem
(0016CB5C) System::UStrClr
(001696E4) System::GetMem
(0016CAA2) System::NewUnicodeString
(0016DBDB) System::UStrSetLength
(0016DC23) System::UStrCat
(00C4B921) __internal_malloc
(00060D5D) ntdll.dll
(00C476C1) __Mtxinit
(000597D1) ntdll.dll
(00C47A43) __Unlocksyslock
(00C5FE23) __unlock_exit
(002EB880) System::Syncobjs::TCriticalSection::TCriticalSection
(00C5E66D) _atexit
(000A772B) C13_7
(00C5FCA4) __init_exit_proc
%

The problem happens rarely. I cannot reproduce it.

chesterusob@...

Invalid access to memory - Vcl::Comctrls::TListColumn::DoChange

2026-11-02 04:04

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Invalid access to memory.

Stack trace:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(000B51E0) ntdll.dll
(000B51AF) ntdll.dll
(0006CC4E) ntdll.dll
(0007962A) ntdll.dll
(0003B4D1) gdi32full.dll
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(00040403) USER32.dll
(00027541) USER32.dll
(000002AA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(0002A767) USER32.dll
(0002A7A1) USER32.dll
(0002A77C) USER32.dll
(000382E7) ntdll.dll
(00040821) TCustomScpExplorerForm::Dispatch
(0002AE8A) UXTHEME.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(003CF515) Vcl::Controls::TWinControl::WndProc
(00037F66) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00038870) UXTHEME.DLL
(00BD6540) C4923_0
(0003FEDD) ntdll.dll
(0003F732) ntdll.dll
(00028229) USER32.dll
(000006FA) win32u.dll
(00026884) USER32.dll
(00040CCA) ntdll.dll
(00023AF9) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00038CC1) USER32.dll
(00027D78) USER32.dll
(00027A63) USER32.dll
(0002781B) USER32.dll
(000C35C7) USER32.dll
(00079604) ntdll.dll
(000001AA) win32u.dll
(00031AC5) USER32.dll
(000319BC) USER32.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDACA) Vcl::Forms::TApplication::HandleMessage
(004DDE09) Vcl::Forms::TApplication::Run
(0015C27B) Execute
(0002809F) ntdll.dll
(0002A7A1) USER32.dll
(0002A77C) USER32.dll
(000AFFA8) ntdll.dll
(004DC941) Vcl::Forms::_17039
(004DD1A7) Vcl::Forms::TApplication::WndProc
(00027E82) USER32.dll
(00027E12) USER32.dll
(00027A63) USER32.dll
(00027E79) USER32.dll
(0001578E) KERNEL32.DLL
(00028F04) USER32.dll
(000048E7) wWinMain
(0016329C) __AfterConstruction
(00BDEDCD) TDesktopFontManager::TDesktopFontManager
(000456AB) ntdll.dll
(001696E4) System::GetMem
(0016CAA2) System::NewUnicodeString
(0016DBDB) System::UStrSetLength
(0016DC23) System::UStrCat
(0006068D) ntdll.dll
(00094F99) ntdll.dll
(00050714) ntdll.dll
(00094F99) ntdll.dll
(00050714) ntdll.dll
(00C5FE23) __unlock_exit
(002EB880) System::Syncobjs::TCriticalSection::TCriticalSection
(00C5E66D) _atexit
(000A772B) C13_7
(00C5FCA4) __init_exit_proc
(00C5FFED) C7910_0
(00C4BA67) ___CRTL_VCL_Init
(00014D47) KERNEL32.DLL
(0006B759) ntdll.dll
(0006B6DC) ntdll.dll

The problem happens rarely. I cannot reproduce it.

alan.wood@...

Invalid access to memory - Vcl::Comctrls::TListColumn::DoChange

2026-11-01 20:07

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Invalid access to memory.

Stack trace:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(000B51E0) ntdll.dll
(000B51AF) ntdll.dll
(0006CC4E) ntdll.dll
(0007962A) ntdll.dll
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(003C9FA0) Vcl::Controls::TControl::Perform
(00BD7B2E) C4923_5
(00BD79C1) C4923_5
(003CD357) Vcl::Controls::TWinControl::AlignControl
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(004A24CF) Vcl::Themes::TStyleManager::GetIsCustomStyleActive
(004A24A4) Vcl::Themes::TStyleManager::IsCustomStyleAvailable
(00038CC1) USER32.dll
(00040821) TCustomScpExplorerForm::Dispatch
(00027E82) USER32.dll
(0002AE8A) UXTHEME.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(003CF515) Vcl::Controls::TWinControl::WndProc
(00037F66) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00038870) UXTHEME.DLL
(00BD6540) C4923_0
(0003FEDD) ntdll.dll
(0003F732) ntdll.dll
(00028229) USER32.dll
(000006FA) win32u.dll
(00026884) USER32.dll
(00040CCA) ntdll.dll
(00023AF9) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00038CC1) USER32.dll
(00027D78) USER32.dll
(00027A63) USER32.dll
(0002781B) USER32.dll
(000C35C7) USER32.dll
(00079604) ntdll.dll
(000003AA) win32u.dll
(003D2984) Vcl::Controls::TWinControl::AdjustSize
(003CD15B) Vcl::Controls::_17058
(0016AC6C) System::TObject::FreeInstance
(0016B3A2) System::ClassDestroy
(0021C580) System::Classes::TList::~TList
(003CD2C3) Vcl::Controls::TWinControl::AlignControls
(004D0836) Vcl::Forms::TScrollingWinControl::AlignControls
(004D39AA) Vcl::Forms::TCustomForm::AlignControls
(003D294F) Vcl::Controls::TWinControl::GetClientRect
(004D2BB7) Vcl::Forms::TCustomForm::GetClientRect
(003CD3AA) Vcl::Controls::TWinControl::AlignControl
(003CD406) Vcl::Controls::TWinControl::Realign
(003CD3FB) Vcl::Controls::TWinControl::EnableAlign
(003D1F20) Vcl::Controls::TWinControl::ScaleControlsForDpi
(004D2275) Vcl::Forms::TCustomForm::ScaleForPPIRect
(004D7A3A) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(004A24CF) Vcl::Themes::TStyleManager::GetIsCustomStyleActive
(004A24A4) Vcl::Themes::TStyleManager::IsCustomStyleAvailable
(00038CC1) USER32.dll
(00040821) TCustomScpExplorerForm::Dispatch
(00027E82) USER32.dll
(0002AE8A) UXTHEME.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(003CF515) Vcl::Controls::TWinControl::WndProc
(00037F66) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00038870) UXTHEME.DLL
(00BD6540) C4923_0
(0003FEDD) ntdll.dll
(0003F732) ntdll.dll
(00028229) USER32.dll
(000006FA) win32u

The problem happens rarely. I cannot reproduce it.

a.casazza@...

Accesso alla memoria non valido - Vcl::Comctrls::TListColumn::DoChange

2026-10-30 09:59

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Accesso alla memoria non valido.

Stack trace:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(000B4BE0) ntdll.dll
(000B4BAF) ntdll.dll
(0006E6EE) ntdll.dll
(0007AF7A) ntdll.dll
(00041512) ntdll.dll
(0003803A) gdi32full.dll
(00094A99) ntdll.dll
(00052514) ntdll.dll
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(0003FDB3) USER32.dll
(00027081) USER32.dll
(000002AA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(004A24CF) Vcl::Themes::TStyleManager::GetIsCustomStyleActive
(004A24A4) Vcl::Themes::TStyleManager::IsCustomStyleAvailable
(00038691) USER32.dll
(00040821) TCustomScpExplorerForm::Dispatch
(000279C2) USER32.dll
(0002AE9A) UXTHEME.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(00094A99) ntdll.dll
(00052514) ntdll.dll
(00051F75) ntdll.dll
(000523C7) ntdll.dll
(003CF515) Vcl::Controls::TWinControl::WndProc
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00038C10) UXTHEME.DLL
(00BD6540) C4923_0
(00037376) UXTHEME.DLL
(00027D69) USER32.dll
(000006FA) win32u.dll
(000263C4) USER32.dll
(00042AAA) ntdll.dll
(00023B19) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00038691) USER32.dll
(000278B8) USER32.dll
(000275A3) USER32.dll
(0002735B) USER32.dll
(000BE957) USER32.dll
(0007AF54) ntdll.dll
(00031765) USER32.dll
(0003165C) USER32.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDACA) Vcl::Forms::TApplication::HandleMessage
(004DDE09) Vcl::Forms::TApplication::Run
(0015C27B) Execute
(000280EF) ntdll.dll
(000263A3) UXTHEME.DLL
(0002A297) USER32.dll
(0002A2D1) USER32.dll
(0002A2AC) USER32.dll
(000AF9B8) ntdll.dll
(004DD1A7) Vcl::Forms::TApplication::WndProc
(000279C2) USER32.dll
(00027952) USER32.dll
(000275A3) USER32.dll
(000279B9) USER32.dll
(00028A34) USER32.dll
(000048E7) wWinMain
(0016329C) __AfterConstruction
(00BDEDCD) TDesktopFontManager::TDesktopFontManager
(0004748B) ntdll.dll
(0016CB5C) System::UStrClr
(001696E4) System::GetMem
(0016CAA2) System::NewUnicodeString
(0016DBDB) System::UStrSetLength
(00C4B921) __internal_malloc
(0006242D) ntdll.dll
(00094A99) ntdll.dll
(00052514) ntdll.dll
(00094A99) ntdll.dll
(00052514) ntdll.dll
(00C5FE23) __unlock_exit
(002EB880) System::Syncobjs::TCriticalSection::TCriticalSection
(00C5E66D) _atexit
(000A772B) C13_7
(00C5FCA4) __init_exit_proc
(00C5FFED) C7910_0
(00014D47) KERNEL32.DLL
(0006D1F9) ntdll.dll
(0006D17C) ntdll.dll

The problem happens rarely. I cannot reproduce it.

HKOCAM@ONCE:NET

Unzulässiger Zugriff auf einen Speicherbereich - Vcl::Comctrls::TListColumn::DoChange

2026-10-29 09:33

dont know how it happend, multiple ssh-sessions open overnight without transfers.
the error message was shown in the morning

WinSCP 6.7

Error message:
Unzulässiger Zugriff auf einen Speicherbereich.

Stapelverfolgung:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(000B51E0) ntdll.dll
(000B51AF) ntdll.dll
(0006CC4E) ntdll.dll
(0007962A) ntdll.dll
(000146B1) bdhkm32.dll
(0004927B) gdi32full.dll
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(003D294F) Vcl::Controls::TWinControl::GetClientRect
(003CD3C7) Vcl::Controls::TWinControl::AlignControl
(000002AA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(00017C80) atcuf32.dll
(00040821) TCustomScpExplorerForm::Dispatch
(00023ADA) UXTHEME.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(000146B1) bdhkm32.dll
(00011D82) bdhkm32.dll
(00011DA0) bdhkm32.dll
(00023ADA) UXTHEME.DLL
(003CF515) Vcl::Controls::TWinControl::WndProc
(00023ADA) UXTHEME.DLL
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00023ADA) UXTHEME.DLL
(00BD6540) C4923_0
(00023ADA) UXTHEME.DLL
(0003F732) ntdll.dll
(00028229) USER32.dll
(00094F99) ntdll.dll
(000456AB) ntdll.dll
(0006E895) USER32.dll
(00027F12) USER32.dll
(00040CCA) ntdll.dll
(00023AF9) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00038CC1) USER32.dll
(00027D78) USER32.dll
(00027A63) USER32.dll
(0002781B) USER32.dll
(000C35C7) USER32.dll
(00079604) ntdll.dll
(000001AA) win32u.dll
(00031AC5) USER32.dll
(0001DD20) atcuf32.dll
(000319BC) USER32.dll
(00000578) bdhkm32.dll
(0001678D) bdhkm32.dll
(00011D54) bdhkm32.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(00252037) System::Actions::TContainedActionList::UpdateAction
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(003CD90A) Vcl::Controls::TWinControl::GetControl
(0016B056) System::IsClass
(0016BC40) System::TMonitor::TryEnter
(0016B768) System::TMonitor::Enter
(0016B5D0) System::TMonitor::CheckOwningThread
(0016B8F6) System::TMonitor::Exit
(0016B952) System::TMonitor::Exit
(00231604) System::Classes::CheckSynchronize
(004DE922) Vcl::Forms::TApplication::DoActionIdle
(004DEA70) Vcl::Forms::TApplication::Idle
(0000023A) win32u.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDACA) Vcl::Forms::TApplication::HandleMessage
(004DDE09) Vcl::Forms::TApplication::Run
(0015C27B) Execute
(0002809F) ntdll.dll
(00026383) UXTHEME.DLL
(0002A767) USER32.dll
(0002A7A1) USER32.dll
(0002A77C) USER32.dll
(000AFFA8) ntdll.dll
(004DD1A7) Vcl::Forms::TApplication::WndProc
(00027E82) USER32.dll
(00027E12) USER32.dll
(00027A63) USER32.dll
(00027E79) USER32.dll
(00028F04) USER32.dll
(000048E7) wWinMain
(0

The problem happens rarely. I cannot reproduce it.

fabian.silber.cyclize@...

Unzulässiger Zugriff auf einen Speicherbereich - Vcl::Comctrls::TListColumn::DoChange

2026-10-29 08:35

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Unzulässiger Zugriff auf einen Speicherbereich.

Stapelverfolgung:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(000B51E0) ntdll.dll
(000B51AF) ntdll.dll
(0006CC4E) ntdll.dll
(0007962A) ntdll.dll
(00027D78) USER32.dll
(00027E82) USER32.dll
(00027E12) USER32.dll
(000274E5) USER32.dll
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(00040403) USER32.dll
(00027541) USER32.dll
(000002AA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(0002A767) USER32.dll
(0002A7A1) USER32.dll
(0002A77C) USER32.dll
(000382E7) ntdll.dll
(00040821) TCustomScpExplorerForm::Dispatch
(0002AE8A) UXTHEME.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(003CF515) Vcl::Controls::TWinControl::WndProc
(00037F66) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00038870) UXTHEME.DLL
(00BD6540) C4923_0
(0003FEDD) ntdll.dll
(0003F732) ntdll.dll
(00028229) USER32.dll
(000006FA) win32u.dll
(00026884) USER32.dll
(00040CCA) ntdll.dll
(00023AF9) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00038CC1) USER32.dll
(00027D78) USER32.dll
(00027A63) USER32.dll
(00027E79) USER32.dll
(0002781B) USER32.dll
(000C35C7) USER32.dll
(00079604) ntdll.dll
(00031AC5) USER32.dll
(000319BC) USER32.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDACA) Vcl::Forms::TApplication::HandleMessage
(004DDE09) Vcl::Forms::TApplication::Run
(0015C27B) Execute
(0002809F) ntdll.dll
(00026383) UXTHEME.DLL
(0002A767) USER32.dll
(0002A7A1) USER32.dll
(0002A77C) USER32.dll
(000AFFA8) ntdll.dll
(004DD1A7) Vcl::Forms::TApplication::WndProc
(00027E82) USER32.dll
(00027E12) USER32.dll
(00027A63) USER32.dll
(00027E79) USER32.dll
(00028F04) USER32.dll
(000048E7) wWinMain
(0016329C) __AfterConstruction
(00BDEDCD) TDesktopFontManager::TDesktopFontManager
(000456AB) ntdll.dll
(0016CB5C) System::UStrClr
(001696E4) System::GetMem
(0016CAA2) System::NewUnicodeString
(0016DBDB) System::UStrSetLength
(00C4B921) __internal_malloc
(0006068D) ntdll.dll
(00094F99) ntdll.dll
(00050714) ntdll.dll
(00094F99) ntdll.dll
(00050714) ntdll.dll
(00C5FE23) __unlock_exit
(002EB880) System::Syncobjs::TCriticalSection::TCriticalSection
(00C5E66D) _atexit
(000A772B) C13_7
(00C5FCA4) __init_exit_proc
(00C5FFED) C7910_0
(00C4BA67) ___CRTL_VCL_Init
(00014D47) KERNEL32.DLL
(0006B759) ntdll.dll
(0006B6DC) ntdll.dll

The problem happens rarely. I cannot reproduce it.

zsocha@...

Invalid access to memory - Vcl::Comctrls::TListColumn::DoChange

2026-10-29 00:27

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Invalid access to memory.

Stack trace:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(00098160) ntdll.dll
(0009812F) ntdll.dll
(0006BDD1) ntdll.dll
(00077D31) ntdll.dll
(00022894) USER32.dll
(00022CD2) USER32.dll
(00022665) USER32.dll
(005229B6) Pastools::_16426
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(000216C1) USER32.dll
(000001AA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(00026223) UXTHEME.DLL
(0001F8B7) USER32.dll
(00045E77) ntdll.dll
(00040821) TCustomScpExplorerForm::Dispatch
(00031E01) USER32.dll
(00022CDB) USER32.dll
(00022C74) USER32.dll
(003CA36A) Vcl::Controls::TControl::WndProc
(00029C58) UXTHEME.DLL
(003CF515) Vcl::Controls::TWinControl::WndProc
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00BD6540) C4923_0
(0001D65A) USER32.dll
(000005FA) win32u.dll
(0001E066) USER32.dll
(0005F4E4) ntdll.dll
(000289B5) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00031E01) USER32.dll
(00022BE1) USER32.dll
(00022894) USER32.dll
(00570176) Tb2hook::_16395
(00022665) USER32.dll
(000927C7) USER32.dll
(00077CEB) ntdll.dll
(000000EA) win32u.dll
(0001F9AF) USER32.dll
(0001D65A) USER32.dll
(0001F787) USER32.dll
(00024EE4) UXTHEME.DLL
(0005157F) UXTHEME.DLL
(0002701A) UXTHEME.DLL
(00036FED) UXTHEME.DLL
(00028D73) UXTHEME.DLL
(00026223) UXTHEME.DLL
(0001F8B7) USER32.dll
(0016B5D0) System::TMonitor::CheckOwningThread
(00031E01) USER32.dll
(00022BE1) USER32.dll
(00022894) USER32.dll
(00022BE1) USER32.dll
(00022CDB) USER32.dll
(00022C74) USER32.dll
(00022552) USER32.dll
(003CF61D) Vcl::Controls::TWinControl::DefaultHandler
(004D5B66) Vcl::Forms::TCustomForm::DefaultHandler
(003D1349) Vcl::Controls::TWinControl::WMSysCommand
(004D7135) Vcl::Forms::TCustomForm::WMSysCommand
(00040898) TCustomScpExplorerForm::Dispatch
(00038382) USER32.dll
(00094838) COMCTL32.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(00045E77) ntdll.dll
(000930F2) COMCTL32.DLL
(00031E01) USER32.dll
(00038382) USER32.dll
(0001D6E2) USER32.dll
(0001D341) USER32.dll
(00038382) USER32.dll
(0001D6E2) USER32.dll
(000930F2) COMCTL32.DLL
(0001D341) USER32.dll
(003CF515) Vcl::Controls::TWinControl::WndProc
(000930F2) COMCTL32.DLL
(00031E01) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00022CDB) USER32.dll
(00022C74) USER32.dll
(00BD68E3) C4923_0
(00022894) USER32.dll
(00022CD2) USER32.dll
(0001D65A) USER32.dll
(0001D341) USER32.dll
(0005F4E4) ntdll.dll
(003CEA20) Vc

The problem happens rarely. I cannot reproduce it.

anatoliy.vtorushin@...

Invalid access to memory - Vcl::Comctrls::TListColumn::DoChange

2026-10-28 17:24

WinSCP was opened on a PC, perhaps on the second display. Then I logged in on remote desktop with a single display and bigger resolution. When I logged in back on the PC I saw the screen.

WinSCP 6.7

Error message:
Invalid access to memory.

Stack trace:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(000B51E0) ntdll.dll
(000B51AF) ntdll.dll
(0006CC4E) ntdll.dll
(0007962A) ntdll.dll
(00027F12) USER32.dll
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(00040403) USER32.dll
(00027541) USER32.dll
(000002AA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(0002A767) USER32.dll
(0002A7A1) USER32.dll
(0002A77C) USER32.dll
(000382E7) ntdll.dll
(00040821) TCustomScpExplorerForm::Dispatch
(0002AE8A) UXTHEME.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(003CF515) Vcl::Controls::TWinControl::WndProc
(00037F66) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00038870) UXTHEME.DLL
(00BD6540) C4923_0
(0003FEDD) ntdll.dll
(0003F732) ntdll.dll
(00028229) USER32.dll
(000006FA) win32u.dll
(00026884) USER32.dll
(00040CCA) ntdll.dll
(00023AF9) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00038CC1) USER32.dll
(00027D78) USER32.dll
(00027A63) USER32.dll
(0002781B) USER32.dll
(000C35C7) USER32.dll
(00079604) ntdll.dll
(00031AC5) USER32.dll
(000319BC) USER32.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDACA) Vcl::Forms::TApplication::HandleMessage
(004DDE09) Vcl::Forms::TApplication::Run
(0015C27B) Execute
(0002809F) ntdll.dll
(00026383) UXTHEME.DLL
(0002A767) USER32.dll
(0002A7A1) USER32.dll
(0002A77C) USER32.dll
(000AFFA8) ntdll.dll
(004DD1A7) Vcl::Forms::TApplication::WndProc
(00027E82) USER32.dll
(00027E12) USER32.dll
(00027A63) USER32.dll
(00027E79) USER32.dll
(00028F04) USER32.dll
(000048E7) wWinMain
(0016329C) __AfterConstruction
(00BDEDCD) TDesktopFontManager::TDesktopFontManager
(000456AB) ntdll.dll
(0016CB5C) System::UStrClr
(001696E4) System::GetMem
(0016CAA2) System::NewUnicodeString
(0016DBDB) System::UStrSetLength
(00C4B921) __internal_malloc
(0006068D) ntdll.dll
(00094F99) ntdll.dll
(00050714) ntdll.dll
(00094F99) ntdll.dll
(00050714) ntdll.dll
(00C5FE23) __unlock_exit
(002EB880) System::Syncobjs::TCriticalSection::TCriticalSection
(00C5E66D) _atexit
(000A772B) C13_7
(00C5FCA4) __init_exit_proc
(00C5FFED) C7910_0
(00C4BA67) ___CRTL_VCL_Init
(00014D47) KERNEL32.DLL
(0006B759) ntdll.dll
(0006B6DC) ntdll.dll

The problem happens rarely. I cannot reproduce it.

liteshock@...

Ошибка доступа к памяти - Vcl::Comctrls::TListColumn::DoChange

2026-10-28 17:05

page of reporting have XSS problem
example:
alert page
https://winscp.net/forum/posting.php?mode=newtopic&ver=6.7&lang=0419&report=123%22%3E%3Cscript%3Ealert(123)%3C/script%3E
The problem happens rarely. I cannot reproduce it.

liteshock@...

Ошибка доступа к памяти - Vcl::Comctrls::TListColumn::DoChange

2026-10-28 17:04

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Ошибка доступа к памяти.

Трассировка стека:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(000B9290) ntdll.dll
(000B925F) ntdll.dll
(0006CD7E) ntdll.dll
(0007973A) ntdll.dll
(00028318) USER32.dll
(00027A85) USER32.dll
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(00040B53) USER32.dll
(00027AE1) USER32.dll
(000002AA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(0002AD07) USER32.dll
(0002AD41) USER32.dll
(0002AD1C) USER32.dll
(000383E7) ntdll.dll
(00040821) TCustomScpExplorerForm::Dispatch
(00094C59) ntdll.dll
(0002AEAA) UXTHEME.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(003CF515) Vcl::Controls::TWinControl::WndProc
(000385D6) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(0003AAF0) UXTHEME.DLL
(00BD6540) C4923_0
(0003FFDD) ntdll.dll
(0003F832) ntdll.dll
(000287C9) USER32.dll
(000006FA) win32u.dll
(00026E24) USER32.dll
(00040DCA) ntdll.dll
(00023A77) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(0003933D) USER32.dll
(00028318) USER32.dll
(00028003) USER32.dll
(00032D89) Msctf.dll
(00027DBB) USER32.dll
(000C9367) USER32.dll
(00079714) ntdll.dll
(000001EA) win32u.dll
(0002ADFB) USER32.dll
(000287C9) USER32.dll
(0002ABD8) USER32.dll
(0002B549) UXTHEME.DLL
(000540BF) UXTHEME.DLL
(00027173) UXTHEME.DLL
(000263A3) UXTHEME.DLL
(0002AD07) USER32.dll
(0003933D) USER32.dll
(00028318) USER32.dll
(00028003) USER32.dll
(0000B401) GDI32.dll
(000A2B15) gdi32full.dll
(0003D862) gdi32full.dll
(00027A85) USER32.dll
(00095D6B) COMCTL32.DLL
(003CF61D) Vcl::Controls::TWinControl::DefaultHandler
(004D5B66) Vcl::Forms::TCustomForm::DefaultHandler
(003D1349) Vcl::Controls::TWinControl::WMSysCommand
(004D7135) Vcl::Forms::TCustomForm::WMSysCommand
(00040898) TCustomScpExplorerForm::Dispatch
(0003CE93) gdi32full.dll
(003CA36A) Vcl::Controls::TControl::WndProc
(0014DB4B) KERNELBASE.dll
(000406F0) USER32.dll
(00028862) USER32.dll
(000284B2) USER32.dll
(000B9F6E) COMCTL32.DLL
(000B9DAC) COMCTL32.DLL
(00096387) COMCTL32.DLL
(00048048) ntdll.dll
(0004810A) ntdll.dll
(003CF515) Vcl::Controls::TWinControl::WndProc
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00094C59) ntdll.dll
(00050814) ntdll.dll
(00BD68E3) C4923_0
(0004C5CF) ntdll.dll
(000287C9) USER32.dll
(000284B2) USER32.dll
(00094C59) ntdll.dll
(00050814) ntdll.dll
(003CEA20)

The problem happens rarely. I cannot reproduce it.

a07015457353@...

メモリのアクセス違反 - Vcl::Comctrls::TListColumn::DoChange

2026-10-28 10:55

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
メモリのアクセス違反

スタックトレース:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(00088260) ntdll.dll
(0008822F) ntdll.dll
(0006892A) ntdll.dll
(00074711) ntdll.dll
(00037509) USER32.dll
(00037307) USER32.dll
(003A9A95) Vcl::Graphics::TCustomCanvas::TextHeight
(0052298D) Pastools::CalculateTextHeight
(005229AA) Pastools::_16426
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(0003553A) USER32.dll
(0000013A) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(0002E753) UXTHEME.DLL
(00035F95) USER32.dll
(00035F9D) USER32.dll
(00035F62) USER32.dll
(0004BA87) ntdll.dll
(00040821) TCustomScpExplorerForm::Dispatch
(00040C09) USER32.dll
(00089CFC) msvcrt.dll
(00089D48) msvcrt.dll
(0003A6F7) USER32.dll
(000006AA) win32u.dll
(003CA36A) Vcl::Controls::TControl::WndProc
(0003164C) UXTHEME.DLL
(0004645D) ntdll.dll
(00047F46) ntdll.dll
(003CF515) Vcl::Controls::TWinControl::WndProc
(000000EA) win32u.dll
(0003BEBC) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00BD6540) C4923_0
(00046117) ntdll.dll
(00038708) USER32.dll
(000005BA) win32u.dll
(000353D6) USER32.dll
(00038681) USER32.dll
(0005A0B4) ntdll.dll
(00035220) USER32.dll
(0002CC1B) UXTHEME.DLL
(0002C46A) UXTHEME.DLL
(0002C477) UXTHEME.DLL
(0002DD20) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00040C09) USER32.dll
(000372C5) USER32.dll
(000370D8) USER32.dll
(00037509) USER32.dll
(000370D8) USER32.dll
(00036EDB) USER32.dll
(00091103) USER32.dll
(0002BAD7) USER32.dll
(000746CB) ntdll.dll
(0000001A) win32u.dll
(0003B674) USER32.dll
(0016BC40) System::TMonitor::TryEnter
(0016B768) System::TMonitor::Enter
(0016B5D0) System::TMonitor::CheckOwningThread
(0016B8F6) System::TMonitor::Exit
(0003B529) USER32.dll
(000000CA) win32u.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDACA) Vcl::Forms::TApplication::HandleMessage
(003D2741) Vcl::Controls::TWinControl::GetHandle
(004D8C2E) Vcl::Forms::TCustomForm::ShowModal
(00B7F297) TMessageForm::ShowModal
(00149C3D) ExecuteMessageDialog
(00169700) System::FreeMem
(0014B546) MoreMessageDialog
(0014CA5B) ExceptionMessageDialog
(0098FACC) TOptions::FindSwitch
(0016CB5C) System::UStrClr
(0039CF31) System::Internal::Strhlpr::UnicodeFree
(0016CE00) System::UStrFromPCharLen
(0039CE79) System::Internal::Strhlpr::UnicodeFromPChar
(00102FF8) ShowExtendedExceptionEx
(0011A684) KERNELBA

The problem happens rarely. I cannot reproduce it.

alex.arion@...

Invalid access to memory - Vcl::Comctrls::TListColumn::DoChange

2026-10-27 07:49

Resumed from stand-by, as far as I can tell.

WinSCP 6.7

Error message:
Invalid access to memory.

Stack trace:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(000B51E0) ntdll.dll
(000B51AF) ntdll.dll
(0006CC4E) ntdll.dll
(0007962A) ntdll.dll
(00094F99) ntdll.dll
(00050714) ntdll.dll
(00037096) gdi32full.dll
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(00040403) USER32.dll
(00027541) USER32.dll
(000002AA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(004A24CF) Vcl::Themes::TStyleManager::GetIsCustomStyleActive
(004A24A4) Vcl::Themes::TStyleManager::IsCustomStyleAvailable
(00038CC1) USER32.dll
(00040821) TCustomScpExplorerForm::Dispatch
(00027E82) USER32.dll
(0002AE8A) UXTHEME.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(003CF515) Vcl::Controls::TWinControl::WndProc
(00037F66) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00038870) UXTHEME.DLL
(00BD6540) C4923_0
(0003FEDD) ntdll.dll
(0003F732) ntdll.dll
(00028229) USER32.dll
(000006FA) win32u.dll
(00026884) USER32.dll
(00040CCA) ntdll.dll
(00023AF9) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00038CC1) USER32.dll
(00027D78) USER32.dll
(00027A63) USER32.dll
(0002781B) USER32.dll
(000C35C7) USER32.dll
(00079604) ntdll.dll
(003CD144) Vcl::Controls::_17058
(003CD2C3) Vcl::Controls::TWinControl::AlignControls
(004D0836) Vcl::Forms::TScrollingWinControl::AlignControls
(004D39AA) Vcl::Forms::TCustomForm::AlignControls
(003D294F) Vcl::Controls::TWinControl::GetClientRect
(004D2BB7) Vcl::Forms::TCustomForm::GetClientRect
(003CD3AA) Vcl::Controls::TWinControl::AlignControl
(003D04CD) Vcl::Controls::TWinControl::WMSize
(004D0F0C) Vcl::Forms::TScrollingWinControl::WMSize
(0016B1B7) System::TObject::Dispatch
(00040898) TCustomScpExplorerForm::Dispatch
(00025D03) UXTHEME.DLL
(000237BF) USER32.dll
(000237F2) USER32.dll
(000237CD) USER32.dll
(003CA36A) Vcl::Controls::TControl::WndProc
(00025D03) UXTHEME.DLL
(00025F46) UXTHEME.DLL
(00023CDD) USER32.dll
(000223A2) USER32.dll
(00024C82) UXTHEME.DLL
(00024BFC) UXTHEME.DLL
(00024C0D) UXTHEME.DLL
(00023CDD) USER32.dll
(000223A2) USER32.dll
(0002F6BD) UXTHEME.DLL
(003CF515) Vcl::Controls::TWinControl::WndProc
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00BD68E3) C4923_0
(000237BF) USER32.dll
(000237F2) USER32.dll
(000237CD) USER32.dll
(00025D03) UXTHEME.DLL
(00025F46) UXTHEME.DLL
(00094F99) ntdll.dll
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00038CC1) USER32.dll
(00027D78) USER32.dll
(00027A63) USER32.dll
(00

The problem happens rarely. I cannot reproduce it.

hanikhanafer@...

Invalid access to memory - Vcl::Comctrls::TListColumn::DoChange

2026-10-27 06:47

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Invalid access to memory.

Stack trace:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(00096460) ntdll.dll
(0009642F) ntdll.dll
(000675C0) ntdll.dll
(000755A1) ntdll.dll
(00059969) USER32.dll
(003A9A95) Vcl::Graphics::TCustomCanvas::TextHeight
(005229B6) Pastools::_16426
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(00025C9E) USER32.dll
(0000014A) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(00021E33) USER32.dll
(00056287) ntdll.dll
(0049B6C5) Vcl::Themes::StyleServices
(0005D3C4) ntdll.dll
(00040821) TCustomScpExplorerForm::Dispatch
(00073D6F) apphelp.dll
(0001780D) tiptsf.dll
(00017815) tiptsf.dll
(003CA36A) Vcl::Controls::TControl::WndProc
(00029FB8) UXTHEME.DLL
(00029FC8) UXTHEME.DLL
(003CF515) Vcl::Controls::TWinControl::WndProc
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00BD6540) C4923_0
(0002A388) UXTHEME.DLL
(00024E21) USER32.dll
(000005CA) win32u.dll
(0001F0C6) USER32.dll
(0005D3C4) ntdll.dll
(0001EDB0) USER32.dll
(00028455) UXTHEME.DLL
(000283F1) UXTHEME.DLL
(00028402) UXTHEME.DLL
(0002B1B7) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00046D31) USER32.dll
(00026FE5) USER32.dll
(00026CBD) USER32.dll
(00059969) USER32.dll
(00026A6B) USER32.dll
(0001B7CB) USER32.dll
(00044237) USER32.dll
(0007555B) ntdll.dll
(0000002A) win32u.dll
(0002C4E8) USER32.dll
(0057A262) Tb2item::TTBView::InitiateActions
(0016BC40) System::TMonitor::TryEnter
(0016B768) System::TMonitor::Enter
(0016B5D0) System::TMonitor::CheckOwningThread
(0002C495) USER32.dll
(000000DA) win32u.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDACA) Vcl::Forms::TApplication::HandleMessage
(003D2741) Vcl::Controls::TWinControl::GetHandle
(004D8C2E) Vcl::Forms::TCustomForm::ShowModal
(00B7F297) TMessageForm::ShowModal
(00149C3D) ExecuteMessageDialog
(0014B546) MoreMessageDialog
(0002202C) TCustomScpExplorerForm::MoreMessageDialog
(00021F35) TCustomScpExplorerForm::MoreMessageDialog
(0002EDC9) USER32.dll
(000E5A4A) TTerminalManager::TerminalQueryUser
(000271C3) USER32.dll
(00027071) USER32.dll
(00059904) USER32.dll
(002EB91A) System::Syncobjs::TCriticalSection::Leave
(009A710D) TQueryUserAction::Execute
(002EB912) System::Syncobjs::TCriticalSection::Enter
(0099DE4B) TTerminalQueue::ItemProcessUserAction
(009A1453) TQueueItemProxy::ProcessUserAction
(004795C9) Vcl::Extctrls::TTimer::UpdateTimer
(0000A463) TCustomScpExplorerForm::UserActionTimer
(00479627) Vcl::Extctrls::TTimer::Timer
(00479507) Vcl::Extc

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.

fra.bdn@...

Invalid access to memory - Vcl::Comctrls::TListColumn::DoChange

2026-10-26 14:16

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Invalid access to memory.

Stack trace:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(000B51E0) ntdll.dll
(000B51AF) ntdll.dll
(0006CC4E) ntdll.dll
(0007962A) ntdll.dll
(00027D78) USER32.dll
(00027E82) USER32.dll
(00027E12) USER32.dll
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(00040403) USER32.dll
(00027541) USER32.dll
(000002AA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(0002A767) USER32.dll
(0002A7A1) USER32.dll
(0002A77C) USER32.dll
(000382E7) ntdll.dll
(00040821) TCustomScpExplorerForm::Dispatch
(0002AE8A) UXTHEME.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(003CF515) Vcl::Controls::TWinControl::WndProc
(00037F66) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00038870) UXTHEME.DLL
(00BD6540) C4923_0
(0003FEDD) ntdll.dll
(0003F732) ntdll.dll
(00028229) USER32.dll
(000006FA) win32u.dll
(00026884) USER32.dll
(00040CCA) ntdll.dll
(00023AF9) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00038CC1) USER32.dll
(00027D78) USER32.dll
(00027A63) USER32.dll
(00027E79) USER32.dll
(0002781B) USER32.dll
(000C35C7) USER32.dll
(00079604) ntdll.dll
(003D1CE9) Vcl::Controls::TWinControl::SetBounds
(004D5B66) Vcl::Forms::TCustomForm::DefaultHandler
(003CAE7C) Vcl::Controls::TControl::WMWindowPosChanged
(003D03EE) Vcl::Controls::TWinControl::WMWindowPosChanged
(00B763A5) TLoginDialog::WMWindowPosChanged
(00B7637B) TLoginDialog::WMWindowPosChanged
(00B764DA) TLoginDialog::Dispatch
(000274E5) USER32.dll
(003CA36A) Vcl::Controls::TControl::WndProc
(003CF61D) Vcl::Controls::TWinControl::DefaultHandler
(003CAE7C) Vcl::Controls::TControl::WMWindowPosChanged
(003D03EE) Vcl::Controls::TWinControl::WMWindowPosChanged
(00479929) Vcl::Extctrls::TCustomPanel::WMWindowPosChanged
(0047993E) Vcl::Extctrls::TCustomPanel::WMWindowPosChanged
(0016B1B7) System::TObject::Dispatch
(003CA36A) Vcl::Controls::TControl::WndProc
(00024464) UXTHEME.DLL
(0013A3CE) TWinConfiguration::UseDarkTheme
(00026232) UXTHEME.DLL
(00BD99D2) UseDarkModeForControl
(003CF515) Vcl::Controls::TWinControl::WndProc
(00BD99D2) UseDarkModeForControl
(003CF515) Vcl::Controls::TWinControl::WndProc
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(004D3701) Vcl::Forms::TCustomForm::WndProc
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00028229) USER32.dll
(00BD68E3) C4923_0
(00028229) USER32.dll
(00027F12) USER32.dll
(00027916) UXTHEME.DLL
(00028229) USER32.dll
(00027F12) USER32.dll
(00094F99) ntdll.dll
(00050714) ntdll.dll
(003CEA20) Vcl::Cont

The problem happens rarely. I cannot reproduce it.

martin

Re: Ошибка доступа к памяти - Vcl::Comctrls::TListColumn::DoChange

2026-10-26

@dima_ktv: Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.

nfreakct@...

Invalid access to memory - Vcl::Comctrls::TListColumn::DoChange

2026-10-25 03:17

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Invalid access to memory.

Stack trace:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(000B51E0) ntdll.dll
(000B51AF) ntdll.dll
(0006CC4E) ntdll.dll
(0007962A) ntdll.dll
(00027F12) USER32.dll
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(00040403) USER32.dll
(00027541) USER32.dll
(000002AA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(004A24CF) Vcl::Themes::TStyleManager::GetIsCustomStyleActive
(004A24A4) Vcl::Themes::TStyleManager::IsCustomStyleAvailable
(00038CC1) USER32.dll
(00040821) TCustomScpExplorerForm::Dispatch
(00027E82) USER32.dll
(0002AE8A) UXTHEME.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(003CF515) Vcl::Controls::TWinControl::WndProc
(00037F66) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00038870) UXTHEME.DLL
(00BD6540) C4923_0
(0003FEDD) ntdll.dll
(0003F732) ntdll.dll
(00028229) USER32.dll
(000006FA) win32u.dll
(00026884) USER32.dll
(00040CCA) ntdll.dll
(00023AF9) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00038CC1) USER32.dll
(00027D78) USER32.dll
(00027A63) USER32.dll
(00032C59) Msctf.dll
(0002781B) USER32.dll
(000C35C7) USER32.dll
(00079604) ntdll.dll
(000001EA) win32u.dll
(0002A85B) USER32.dll
(00028229) USER32.dll
(0002A638) USER32.dll
(0002B529) UXTHEME.DLL
(0005190F) UXTHEME.DLL
(00027153) UXTHEME.DLL
(00026383) UXTHEME.DLL
(0002A767) USER32.dll
(00038CC1) USER32.dll
(00027D78) USER32.dll
(00027A63) USER32.dll
(0000B401) GDI32.dll
(000966EF) COMCTL32.DLL
(00094F99) ntdll.dll
(000505C7) ntdll.dll
(000274E5) USER32.dll
(0006AA7A) COMCTL32.DLL
(000274E5) USER32.dll
(000963D7) COMCTL32.DLL
(003CF61D) Vcl::Controls::TWinControl::DefaultHandler
(004D5B66) Vcl::Forms::TCustomForm::DefaultHandler
(003D1349) Vcl::Controls::TWinControl::WMSysCommand
(004D7135) Vcl::Forms::TCustomForm::WMSysCommand
(00040898) TCustomScpExplorerForm::Dispatch
(003CA36A) Vcl::Controls::TControl::WndProc
(00038CC1) USER32.dll
(0003FFF0) USER32.dll
(000282C2) USER32.dll
(00027F12) USER32.dll
(000382E7) ntdll.dll
(00094672) COMCTL32.DLL
(0003FFF0) USER32.dll
(000282C2) USER32.dll
(00027F12) USER32.dll
(0004800A) ntdll.dll
(000382E7) ntdll.dll
(00094672) COMCTL32.DLL
(003CF515) Vcl::Controls::TWinControl::WndProc
(00038CC1) USER32.dll
(00027D78) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00027A63) USER32.dll
(00BD68E3) C4923_0
(0004C3CC) ntdll.dll
(00028229) USER32.dll
(00027F12) USER32.dll
(00094F99) ntdll.dll
(00050

The problem happens rarely. I cannot reproduce it.

bassem.bouabidi@...

Invalid access to memory - Vcl::Comctrls::TListColumn::DoChange

2026-10-24 13:13

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Invalid access to memory.

Stack trace:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(00088260) ntdll.dll
(0008822F) ntdll.dll
(0006892A) ntdll.dll
(00074711) ntdll.dll
(00040C09) USER32.dll
(003A9A95) Vcl::Graphics::TCustomCanvas::TextHeight
(005229B6) Pastools::_16426
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(0003553A) USER32.dll
(0000013A) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(0002E753) UXTHEME.DLL
(00035F95) USER32.dll
(00035F9D) USER32.dll
(00035F62) USER32.dll
(0004BA87) ntdll.dll
(00040821) TCustomScpExplorerForm::Dispatch
(00040C09) USER32.dll
(00089CFC) msvcrt.dll
(00089D48) msvcrt.dll
(0003A6F7) USER32.dll
(000006AA) win32u.dll
(003CA36A) Vcl::Controls::TControl::WndProc
(0003164C) UXTHEME.DLL
(0004645D) ntdll.dll
(00047F46) ntdll.dll
(003CF515) Vcl::Controls::TWinControl::WndProc
(000000EA) win32u.dll
(0003BEBC) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00BD6540) C4923_0
(00046117) ntdll.dll
(00038708) USER32.dll
(000005BA) win32u.dll
(000353D6) USER32.dll
(0005A0B4) ntdll.dll
(00035220) USER32.dll
(0002CC1B) UXTHEME.DLL
(0002C46A) UXTHEME.DLL
(0002C477) UXTHEME.DLL
(0002DD20) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(0013F073) TCustomCommandType::LoadExtension
(00040C09) USER32.dll
(0013F073) TCustomCommandType::LoadExtension
(000372C5) USER32.dll
(0013F073) TCustomCommandType::LoadExtension
(000370D8) USER32.dll
(00037509) USER32.dll
(000370D8) USER32.dll
(00036EDB) USER32.dll
(0013F073) TCustomCommandType::LoadExtension
(00091103) USER32.dll
(0002BAD7) USER32.dll
(0013F073) TCustomCommandType::LoadExtension
(000746CB) ntdll.dll
(0013F073) TCustomCommandType::LoadExtension
(0003B674) USER32.dll
(0003B529) USER32.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDACA) Vcl::Forms::TApplication::HandleMessage
(004DDE09) Vcl::Forms::TApplication::Run
(0015C27B) Execute
(000325C3) UXTHEME.DLL
(000325F0) UXTHEME.DLL
(0002EADF) UXTHEME.DLL
(0002E753) UXTHEME.DLL
(00035F95) USER32.dll
(00035F9D) USER32.dll
(00035F62) USER32.dll
(004DC941) Vcl::Forms::_17039
(004DD1A7) Vcl::Forms::TApplication::WndProc
(00037509) USER32.dll
(009CEBFB) TS3FileSystem::GetBucketContext
(0003A587) USER32.dll
(00C5F8A1) C7890_0
(000048E7) wWinMain
(0016329C) __AfterConstruction
(00BDEDCD) TDesktopFontManager::TDesktopFontManager
(0005F254) ntdll.dll
(00169700) System::FreeMem
(0016CB5C) System::UStrClr
(001696E4) System::GetMem
(0016C

The problem happens rarely. I cannot reproduce it.

dima_ktv@...

Ошибка доступа к памяти - Vcl::Comctrls::TListColumn::DoChange

2026-10-24 12:50

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Ошибка доступа к памяти.

Трассировка стека:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(00C63D3A) ____ExceptionHandler
(00088350) ntdll.dll
(0008831F) ntdll.dll
(00C63C5F) C8053_3
(000689DA) ntdll.dll
(00C63C5F) C8053_3
(000747C1) ntdll.dll
(0004C8A9) USER32.dll
(000431C9) USER32.dll
(00042FC7) USER32.dll
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(00C63C5F) C8053_3
(000411FA) USER32.dll
(0000013A) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(0002E753) UXTHEME.DLL
(00041C55) USER32.dll
(00041C5D) USER32.dll
(00041C22) USER32.dll
(0004BB37) ntdll.dll
(00040821) TCustomScpExplorerForm::Dispatch
(0004C8A9) USER32.dll
(00C63C5F) C8053_3
(00089CFC) msvcrt.dll
(00089D48) msvcrt.dll
(000463A7) USER32.dll
(000006AA) win32u.dll
(003CA36A) Vcl::Controls::TControl::WndProc
(0003164C) UXTHEME.DLL
(003CF515) Vcl::Controls::TWinControl::WndProc
(000000EA) win32u.dll
(00047B6C) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(0002E168) UXTHEME.DLL
(00BD6540) C4923_0
(000443B8) USER32.dll
(000005BA) win32u.dll
(00041096) USER32.dll
(00044331) USER32.dll
(0005A164) ntdll.dll
(00040EE0) USER32.dll
(0002CC1B) UXTHEME.DLL
(00C63C5F) C8053_3
(0002C46A) UXTHEME.DLL
(0002C477) UXTHEME.DLL
(0002DD20) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(0004C8A9) USER32.dll
(00042F85) USER32.dll
(00042D98) USER32.dll
(000431C9) USER32.dll
(00042D98) USER32.dll
(00042B9B) USER32.dll
(0009CA93) USER32.dll
(00037757) USER32.dll
(0007477B) ntdll.dll
(0000001A) win32u.dll
(00047324) USER32.dll
(0016BC40) System::TMonitor::TryEnter
(0016B768) System::TMonitor::Enter
(0016B5D0) System::TMonitor::CheckOwningThread
(0016B8F6) System::TMonitor::Exit
(000471D9) USER32.dll
(000000CA) win32u.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDACA) Vcl::Forms::TApplication::HandleMessage
(004DDE09) Vcl::Forms::TApplication::Run
(0015C27B) Execute
(000325C3) UXTHEME.DLL
(000325F0) UXTHEME.DLL
(0002EADF) UXTHEME.DLL
(0002E753) UXTHEME.DLL
(00041C55) USER32.dll
(00041C5D) USER32.dll
(00041C22) USER32.dll
(004DC941) Vcl::Forms::_17039
(0004BB37) ntdll.dll
(0004C8A9) USER32.dll
(00042F85) USER32.dll
(0005A164) ntdll.dll
(00042D98) USER32.dll
(000431C9) USER32.dll
(00C63C5F) C8053_3
(000048E7) wWinMain
(0016329C) __AfterConstruction
(00BDEDCD) TDesktopFontManager%3

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.

taylor.garry@...

Invalid access to memory - Vcl::Comctrls::TListColumn::DoChange

2026-10-22 22:22

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Invalid access to memory.

Stack trace:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(000B51E0) ntdll.dll
(000B51AF) ntdll.dll
(0006CC4E) ntdll.dll
(0007962A) ntdll.dll
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(00040403) USER32.dll
(00027541) USER32.dll
(000002AA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(0002A767) USER32.dll
(0002A7A1) USER32.dll
(0002A77C) USER32.dll
(000382E7) ntdll.dll
(00040821) TCustomScpExplorerForm::Dispatch
(0002AE8A) UXTHEME.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(003CF515) Vcl::Controls::TWinControl::WndProc
(00037F66) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00038870) UXTHEME.DLL
(00BD6540) C4923_0
(0003FEDD) ntdll.dll
(0003F732) ntdll.dll
(00028229) USER32.dll
(000006FA) win32u.dll
(00026884) USER32.dll
(00040CCA) ntdll.dll
(00023AF9) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00038CC1) USER32.dll
(00027D78) USER32.dll
(00027A63) USER32.dll
(0002781B) USER32.dll
(000C35C7) USER32.dll
(00079604) ntdll.dll
(000001AA) win32u.dll
(00031AC5) USER32.dll
(000319BC) USER32.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDACA) Vcl::Forms::TApplication::HandleMessage
(003D2741) Vcl::Controls::TWinControl::GetHandle
(004D8C2E) Vcl::Forms::TCustomForm::ShowModal
(00B7F297) TMessageForm::ShowModal
(00149C3D) ExecuteMessageDialog
(0014B546) MoreMessageDialog
(00162019) System::UnicodeString::UnicodeString
(0039CF31) System::Internal::Strhlpr::UnicodeFree
(0014CA5B) ExceptionMessageDialog
(0014932D) TMessageParams::TMessageParams
(0014CE50) FatalExceptionMessageDialog
(001491C1) TMessageParams::Reset
(00161FAB) System::UnicodeString::~UnicodeString
(0039CF31) System::Internal::Strhlpr::UnicodeFree
(00103B82) ShowExtendedExceptionEx
(0002781B) USER32.dll
(000329D7) USER32.dll
(0007727A) ntdll.dll
(00079604) ntdll.dll
(000001EA) win32u.dll
(000290BB) USER32.dll
(00169700) System::FreeMem
(00446F3E) Vcl::Comctrls::TCustomListView::IsEditing
(00045163) TCustomScpExplorerForm::IsBusy
(00036C5D) TCustomScpExplorerForm::ShowExtendedException
(00A7BBBC) TSessionLog::AddException
(0004CD6B) ntdll.dll
(000E606E) TTerminalManager::TerminalShowExtendedException
(00AC59D3) TTerminal::ShowExtendedException
(0016DB90) System::UStrSetLength
(000E4EDC) TTerminalManager::ApplicationException
(0016B056) System::IsClass
(0050EF90) Vcl::Appevnts::TCustomApplicationEvents::DoException
(0050F6FE) Vcl::Appevnts::_16423
(004DDF5A) Vcl::Forms::TApplication::HandleException
(00479525) Vcl:%

The problem happens rarely. I cannot reproduce it.

ricardotrinidad65@...

Accesso alla memoria non valido - Vcl::Comctrls::TListColumn::DoChange

2026-10-22 14:11

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Accesso alla memoria non valido.

Stack trace:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(000B51E0) ntdll.dll
(000B51AF) ntdll.dll
(0006CC4E) ntdll.dll
(0007962A) ntdll.dll
(00027D78) USER32.dll
(000274E5) USER32.dll
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(00040403) USER32.dll
(00027541) USER32.dll
(000002AA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(0002A767) USER32.dll
(0002A7A1) USER32.dll
(0002A77C) USER32.dll
(000382E7) ntdll.dll
(00040821) TCustomScpExplorerForm::Dispatch
(00050714) ntdll.dll
(0004E852) ntdll.dll
(0002AE8A) UXTHEME.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(003CF515) Vcl::Controls::TWinControl::WndProc
(00037F66) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00094F99) ntdll.dll
(00BD6540) C4923_0
(0003FEDD) ntdll.dll
(0003F732) ntdll.dll
(00028229) USER32.dll
(000006FA) win32u.dll
(00026884) USER32.dll
(00040CCA) ntdll.dll
(00023AF9) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00038CC1) USER32.dll
(00027D78) USER32.dll
(00027A63) USER32.dll
(00027E79) USER32.dll
(0002781B) USER32.dll
(000C35C7) USER32.dll
(00079604) ntdll.dll
(00031AC5) USER32.dll
(0016BC40) System::TMonitor::TryEnter
(0016B768) System::TMonitor::Enter
(0016B5D0) System::TMonitor::CheckOwningThread
(0016B8F6) System::TMonitor::Exit
(000319BC) USER32.dll
(0000023A) win32u.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDACA) Vcl::Forms::TApplication::HandleMessage
(004DDE09) Vcl::Forms::TApplication::Run
(0015C27B) Execute
(0002809F) ntdll.dll
(00026383) UXTHEME.DLL
(0002A767) USER32.dll
(0002A7A1) USER32.dll
(0002A77C) USER32.dll
(000AFFA8) ntdll.dll
(004DD1A7) Vcl::Forms::TApplication::WndProc
(00027E82) USER32.dll
(00027E12) USER32.dll
(00027A63) USER32.dll
(00027E79) USER32.dll
(00028F04) USER32.dll
(000048E7) wWinMain
(0016329C) __AfterConstruction
(00BDEDCD) TDesktopFontManager::TDesktopFontManager
(000456AB) ntdll.dll
(0016CB5C) System::UStrClr
(001696E4) System::GetMem
(0016CAA2) System::NewUnicodeString
(0016DBDB) System::UStrSetLength
(00C4B921) __internal_malloc
(0006068D) ntdll.dll
(00094F99) ntdll.dll
(00050714) ntdll.dll
(00094F99) ntdll.dll
(00050714) ntdll.dll
(00C5FE23) __unlock_exit
(002EB880) System::Syncobjs::TCriticalSection::TCriticalSection
(00C5E66D) _atexit
(000A772B) C13_7
(00C5FCA4) __init_exit_proc
(00C5FFED) C7910_0
(00C4BA67) ___CRTL_VCL_Init
(00014D47) KERNEL32.DLL
(0006B759%

The problem happens rarely. I cannot reproduce it.

ezavala@...

Acceso a memoria no válido - Vcl::Comctrls::TListColumn::DoChange

2026-10-21 13:44

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>

Rastreo de la pila:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(00C63D3A) ____ExceptionHandler
(00088260) ntdll.dll
(0008822F) ntdll.dll
(0006892A) ntdll.dll
(00074711) ntdll.dll
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(0003553A) USER32.dll
(0000013A) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(0002E753) UXTHEME.DLL
(00035F95) USER32.dll
(00035F9D) USER32.dll
(00035F62) USER32.dll
(0004BA87) ntdll.dll
(00040821) TCustomScpExplorerForm::Dispatch
(00040C09) USER32.dll
(00089CFC) msvcrt.dll
(00089D48) msvcrt.dll
(0003A6F7) USER32.dll
(000006AA) win32u.dll
(003CA36A) Vcl::Controls::TControl::WndProc
(0003164C) UXTHEME.DLL
(003CF515) Vcl::Controls::TWinControl::WndProc
(000000EA) win32u.dll
(0003BEBC) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(0002E168) UXTHEME.DLL
(00BD6540) C4923_0
(00038708) USER32.dll
(000005BA) win32u.dll
(000353D6) USER32.dll
(0005A0B4) ntdll.dll
(00035220) USER32.dll
(0002CC1B) UXTHEME.DLL
(0002C46A) UXTHEME.DLL
(0002C477) UXTHEME.DLL
(0002DD20) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00040C09) USER32.dll
(000372C5) USER32.dll
(000370D8) USER32.dll
(00037509) USER32.dll
(000370D8) USER32.dll
(00036EDB) USER32.dll
(00091103) USER32.dll
(0002BAD7) USER32.dll
(000746CB) ntdll.dll
(0000001A) win32u.dll
(0003B674) USER32.dll
(0012911C) KERNELBASE.dll
(0003B529) USER32.dll
(0018D3DB) System::Sysutils::TryEncodeTime
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDAB2) Vcl::Forms::TApplication::ProcessMessages
(0014D822) ProcessGUI
(00BA73ED) TProgressForm::SetProgressData
(000148CA) TCustomScpExplorerForm::FileOperationProgress
(00169700) System::FreeMem
(0016CB5C) System::UStrClr
(0039CF31) System::Internal::Strhlpr::UnicodeFree
(0006A37F) TScpCommanderForm::FileOperationProgress
(003C8A26) Vcl::Controls::TControl::GetTextBuf
(000EA151) TTerminalManager::UpdateAppTitle
(00015160) TCustomScpExplorerForm::OperationProgress
(000E63ED) TTerminalManager::OperationProgress
(00AC5C12) TTerminal::DoProgress
(001930BC) System::Sysutils::CheckWin32Version
(00073CDA) ntdll.dll
(000186D1) KERNEL32.DLL
(00956B78) TFileOperationProgressType::AddTransferred
(00AB065D) TSFTPFileSystem::Sink
(00044DE3) ntdll.dll
(00044E6C) ntdll.dll
(0004829A) ntdll.dll
(000482B4) ntdll.dll
(000518AB) ntdll.dll
(0010DA69) KERNELBASE.dll
(001696E4) System::GetMem
(0018A9DE) System::Sysutils::ExpandFileName
(00161FAB) System::UnicodeString::~UnicodeString
(00AF0CB0) TTerminal::Sink
(00451820) Vcl::Comctrls::TCoolBar::GetCaptionFontHeight
(0018D3DB) System::Sysutils::TryEncodeTime
(0018D416) System::Sysutils::EncodeTime
(00ACE139) TTerminal::CustomReadDirectory
(00169700) System::FreeMem
(0016CB5C) System::UStrClr
(0039CF31) System::Internal::Strhlpr::UnicodeFree
(00A77A60) TDownloadSessionAction::TDownloadSessionAction
(00AEF38A) TTerminal::SinkRobust
(00161FAB) System::UnicodeString::~UnicodeString
(001696E4) System::GetMem
(0016DC23) System::UStrCat
(0016CB5C) System::UStrClr
(0039CF31) System::Internal::Strhlpr::UnicodeFree
(00161FAB) System::UnicodeString::~UnicodeString
(00AF11AC) TTerminal::SinkFile
(00162278) System::UnicodeString::operator +
(00AD0422) TTerminal::ProcessDirectory
(0007273A) ntdll.dll
(00042EF1) ntdll.dll
(0039CF31) System::Internal::Strhlpr::UnicodeFree
(00161FAB) System::UnicodeString::~UnicodeString
(00AEFC2E) TTerminal::Sink
(0005C2F1) ntdll.dll
(0016DC23) System::UStrCat
(0039CECA) System::Internal::Strhlpr::UnicodeAppend
(0016CB5C) System::UStrClr
(001696E4) System::GetMem
(00C4C650) C6490_0
(00162680) System::UnicodeString::SubString1
(009A8026) UnixExcludeTrailingBackslash
(0039CF31) System::Internal::Strhlpr::UnicodeFree
(00161FAB) System::UnicodeString::~UnicodeString
(00A77A60) TDownloadSessionAction::TDownloadSessionAction
(00AEF38A) TTerminal::SinkRobust
(0039CF31) System::Internal::Strhlpr::UnicodeFree
(00161FAB) System::UnicodeString::~UnicodeString
(00AC6574) TTerminal::AbsolutePath
(00AEF056) TTerminal::DoCopyToLocal
(00AEB896) TTerminal::LogTotalTransferDetails
(00AAE6A4) TSFTPFileSystem::CopyToLocal
(00AE6FBE) TTerminal::CopyToLocal
(0016DBDB) System::UStrSetLength
(00169700) System::FreeMem
(0016CB5C) System::UStrClr
(00161FAB) System::UnicodeString::~UnicodeString
(0039CF31) System::Internal::Strhlpr::UnicodeFree
(0016E7F9) System::_17514
(001696E4) System::GetMem
(009B50A8) TRemoteFileList::CloneStrings
(0016B3C5) System::AfterConstruction
(0001E9C7) std::unique_ptr<System::Classes::TStrings, std::default_delete<System::Classes::TStrings> >::reset
(0001E011) TCustomScpExplorerForm::ExecuteCopyMoveFileOperation
(00037509) USER32.dll
(00036EDB) USER32.dll
(000746CB) ntdll.dll
(00066780) TScpCommanderForm::BatchStart
(0002007F) TCustomScpExplorerForm::ExecuteFileOperation
(0052132F) Nortonlikelistview::TCustomNortonLikeListView::GetNextItem
(005349E5) Customdirview::TCustomDirView::CustomCreateFileList
(00021856) TCustomScpExplorerForm::ExecuteFileOperation
(000746CB) ntdll.dll
(0003882A) TCustomScpExplorerForm::RemoteFileControlFileOperation
(00442992) Vcl::Comctrls::TListItems::GetCount
(00038BBC) TCustomScpExplorerForm::RemoteFileControlDDEnd
(00087218) ntdll.dll
(0016E95E) System::FinalizeRecord
(00169700) System::FreeMem
(001705DF) System::DynArrayClear
(001701EC) System::DynArraySetLength
(0016ED9A) System::FinalizeArray
(0021CA82) System::Classes::TList::SetCapacity
(0053566B) Customdirview::TCustomDirView::DDDragDetect
(008EF8EB) TUnixDirView::DDDragDetect
(008EF8D3) TUnixDirView::DDDragDetect
(00531D84) Customdirview::TCustomDirView::CNNotify
(003CA36A) Vcl::Controls::TControl::WndProc
(003D0155) Vcl::Controls::TWinControl::WMNotify
(003CA36A) Vcl::Controls::TControl::WndProc
(000370D8) USER32.dll
(00037509) USER32.dll
(000369F1) USER32.dll
(000351F6) USER32.dll
(003CF515) Vcl::Controls::TWinControl::WndProc
(0001AD39) KERNEL32.DLL
(0016BC40) System::TMonitor::TryEnter
(00447027) Vcl::Comctrls::TCustomListView::WndProc
(003C9FA0) Vcl::Controls::TControl::Perform
(003CF66F) Vcl::Controls::_17122
(003D0155) Vcl::Controls::TWinControl::WMNotify
(003CA36A) Vcl::Controls::TControl::WndProc
(00235394) System::Classes::_18364
(00040C09) USER32.dll
(000372C5) USER32.dll
(00037509) USER32.dll
(00037307) USER32.dll
(0007A0CB) COMCTL32.DLL
(0007A104) COMCTL32.DLL
(0004BA87) ntdll.dll
(000370D8) USER32.dll
(00037509) USER32.dll
(003CF515) Vcl::Controls::TWinControl::WndProc
(00036EDB) USER32.dll
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00040C09) USER32.dll
(000372C5) USER32.dll
(0000007A) win32u.dll
(00038379) USER32.dll
(000370D8) USER32.dll
(00068C6F) COMCTL32.DLL
(00036EDB) USER32.dll
(00091103) USER32.dll
(0003B3AD) USER32.dll
(000746CB) ntdll.dll
(0000007A) win32u.dll
(00038379) USER32.dll
(0003BDCA) USER32.dll
(0003553A) USER32.dll
(00068C61) COMCTL32.DLL
(0000021A) win32u.dll
(0003430A) USER32.dll
(0019FA6F) COMCTL32.DLL
(0007F880) COMCTL32.DLL
(000A5F38) COMCTL32.DLL
(000372C5) USER32.dll
(0004BA87) ntdll.dll
(00235394) System::Classes::_18364
(000370D8) USER32.dll
(00037509) USER32.dll
(000369F1) USER32.dll
(00038681) USER32.dll
(00064C92) COMCTL32.DLL
(00040C09) USER32.dll
(000372C5) USER32.dll
(0003B3AD) USER32.dll
(0007221A) ntdll.dll
(0003B3C1) USER32.dll
(000370D8) USER32.dll
(003CF515) Vcl::Controls::TWinControl::WndProc
(000369F1) USER32.dll
(000351F6) USER32.dll
(003CF61D) Vcl::Controls::TWinControl::DefaultHandler
(003CA9D1) Vcl::Controls::TControl::WMLButtonDown
(00448501) Vcl::Comctrls::TCustomListView::WMLButtonDown
(0053514F) Customdirview::TCustomDirView::EndSelectionUpdate
(00520DFE) Nortonlikelistview::TCustomNortonLikeListView::SelectAll
(00520FA2) Nortonlikelistview::TCustomNortonLikeListView::WMLButtonDown
(005339C6) Customdirview::TCustomDirView::WMLButtonDown
(003CA36A) Vcl::Controls::TControl::WndProc
(003CF515) Vcl::Controls::TWinControl::WndProc
(0016BC40) System::TMonitor::TryEnter
(0016B768) System::TMonitor::Enter
(0016B5D0) System::TMonitor::CheckOwningThread
(0016B8F6) System::TMonitor::Exit
(0016B952) System::TMonitor::Exit
(003AFE6D) Vcl::Graphics::FreeMemoryContexts
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(0004BA87) ntdll.dll
(003CEC18) Vcl::Controls::TWinControl::ControlAtPos
(003CECD4) Vcl::Controls::TWinControl::IsControlMouseMsg
(0004BA87) ntdll.dll
(00070490) COMCTL32.DLL
(003CF515) Vcl::Controls::TWinControl::WndProc
(00040C09) USER32.dll
(00447027) Vcl::Comctrls::TCustomListView::WndProc
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00040C09) USER32.dll
(000372C5) USER32.dll
(00036EDB) USER32.dll
(000370D8) USER32.dll
(000369F1) USER32.dll
(000351F6) USER32.dll
(0007A257) COMCTL32.DLL
(000000EA) win32u.dll
(0007A2F6) COMCTL32.DLL
(005CE387) Xml::Xmldoc::_16448
(000000EA) win32u.dll
(0007A0AC) COMCTL32.DLL
(00040C09) USER32.dll
(000372C5) USER32.dll
(000351F6) USER32.dll
(0055AA63) Dragdrop::TDragDrop::WndMethod
(000370D8) USER32.dll
(000372C5) USER32.dll
(000369F1) USER32.dll
(000351F6) USER32.dll
(0055AA63) Dragdrop::TDragDrop::WndMethod
(005702F9) Tb2hook::_16397
(00235394) System::Classes::_18364
(00040C09) USER32.dll
(000372C5) USER32.dll
(0007221A) ntdll.dll
(0039CF31) System::Internal::Strhlpr::UnicodeFree
(00161FAB) System::UnicodeString::~UnicodeString
(000370D8) USER32.dll
(00035B6B) USER32.dll
(000000EA) win32u.dll
(0003BEBC) USER32.dll
(0003569B) USER32.dll
(004DDA87) Vcl::Forms::TApplication::ProcessMessage
(004DDACA) Vcl::Forms::TApplication::HandleMessage
(004DDE09) Vcl::Forms::TApplication::Run
(0015C27B) Execute
(000325C3) UXTHEME.DLL
(000325F0) UXTHEME.DLL
(0002EADF) UXTHEME.DLL
(0002E753) UXTHEME.DLL
(00035F95) USER32.dll
(00035F9D) USER32.dll
(00035F62) USER32.dll
(004DC941) Vcl::Forms::_17039
(004DD1A7) Vcl::Forms::TApplication::WndProc
(00040C09) USER32.dll
(000372C5) USER32.dll
(000370D8) USER32.dll
(00037509) USER32.dll
(0003A587) USER32.dll
(00C5F8A1) C7890_0
(000048E7) wWinMain
(0016329C) __AfterConstruction
(00BDEDCD) TDesktopFontManager::TDesktopFontManager
(0005F254) ntdll.dll
(00169700) System::FreeMem
(0016CB5C) System::UStrClr
(001696E4) System::GetMem
(0016CAA2) System::NewUnicodeString
(0016DBDB) System::UStrSetLength
(0016DC23) System::UStrCat
(00C4B921) __internal_malloc
(0005B86D) ntdll.dll
(0005F254) ntdll.dll
(00C43BA1) std::set_new_handler
(00C445AC) std::_Winit::_Winit
(00C5FE23) __unlock_exit
(002EB880) System::Syncobjs::TCriticalSection::TCriticalSection
(00C5E66D) _atexit
(000A772B) C13_7
(00C5FCA4) __init_exit_proc
(00C5FFED) C7910_0
(0001ECC7) KERNEL32.DLL
(000672AC) ntdll.dll
(00067279) ntdll.dll

<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Acceso a memoria no válido

Rastreo de la pila:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(00C63D3A) ____ExceptionHandler
(00088260) ntdll.dll
(0008822F) ntdll.dll
(0006892A) ntdll.dll
(00074711) ntdll.dll
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(0003553A) USER32.dll
(0000013A) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(0002E753) UXTHEME.DLL
(00035F95) USER32.dll
(00035F9D) USER32.dll
(00035F62) USER32.dll
(0004BA87) ntdll.dll
(00040821) TCustomScpExplorerForm::Dispatch
(00040C09) USER32.dll
(00089CFC) msvcrt.dll
(00089D48) msvcrt.dll
(0003A6F7) USER32.dll
(000006AA) win32u.dll
(003CA36A) Vcl::Controls::TControl::WndProc
(0003164C) UXTHEME.DLL
(003CF515) Vcl::Controls::TWinControl::WndProc
(000000EA) win32u.dll
(0003BEBC) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(0002E168) UXTHEME.DLL
(00BD6540) C4923_0
(00038708) USER32.dll
(000005BA) win32u.dll
(000353D6) USER32.dll
(0005A0B4) ntdll.dll
(00035220) USER32.dll
(0002CC1B) UXTHEME.DLL
(0002C46A) UXTHEME.DLL
(0002C477) UXTHEME.DLL
(0002DD20) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00040C09) USER32.dll
(000372C5) USER32.dll
(000370D8) USER32.dll
(00037509) USER32.dll
(000370D8) USER32.dll
(00036EDB) USER32.dll
(00091103) USER32.dll
(0002BAD7) USER32.dll
(000746CB) ntdll.dll
(0000001A) win32u.dll
(0003B674) USER32.dll
(0012911C) KERNELBASE.dll
(0003B529) USER32.dll
(0018D3DB) System::Sysutils::TryEncodeTime
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDAB2) Vcl::Forms::TApplication::ProcessMessages
(0014D822) ProcessGUI
(00BA73ED) TProgressForm::SetProgressData
(000148CA) TCustomScpExplorerForm::FileOperationProgress
(00169700) System::FreeMem
(0016CB5C) System::UStrClr
(0039CF31) System::Internal::Strhlpr::UnicodeFree
(0006A37F) TScpCommanderForm::FileOperationProgress
(003C8A26) Vcl::Controls::TControl::GetTextBuf
(000EA151) TTerminalManager::UpdateAppTitle
(00015160) TCustomScpExplorerForm::OperationProgress
(000E63ED) TTerminalManager::OperationProgress
(00AC5C12) TTerminal::DoProgress
(001930BC) System::Sysutils::CheckWin32Version
(00073CDA) ntdll.dll
(000186D1) KERNEL32.DLL
(00956B78) TFileOperationProgressType::AddTransferred
(00AB065D) TSFTPFileSystem::Sink
(00044DE3) ntdll.dll
(00044E6C) ntdll.dll
(0004829A) ntdll.dll
(000482B4) ntdll.dll
(000518AB) ntdll.dll
(0010DA69) KERNELBASE.dll
(001696E4) System::GetMem
(0018A9DE) System::Sysutils::ExpandFileName
(00161FAB) System::UnicodeSt

The problem happens rarely. I cannot reproduce it.

felipemdsantos98@...

Acesso inválido à memória - Vcl::Comctrls::TListColumn::DoChange

2026-10-20 21:06

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Acesso inválido à memória

Rastreamento de pilha:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(00ADFFFB) TTerminal::DoSynchronizeCollectDirectory
(00088260) ntdll.dll
(0008822F) ntdll.dll
(0006892A) ntdll.dll
(00074711) ntdll.dll
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(0003553A) USER32.dll
(0000013A) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(0002E753) UXTHEME.DLL
(00035F95) USER32.dll
(00035F9D) USER32.dll
(00035F62) USER32.dll
(0004BA87) ntdll.dll
(00040821) TCustomScpExplorerForm::Dispatch
(00040C09) USER32.dll
(00089CFC) msvcrt.dll
(00089D48) msvcrt.dll
(0003A6F7) USER32.dll
(000006AA) win32u.dll
(003CA36A) Vcl::Controls::TControl::WndProc
(0003164C) UXTHEME.DLL
(003CF515) Vcl::Controls::TWinControl::WndProc
(000000EA) win32u.dll
(0003BEBC) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(0002E168) UXTHEME.DLL
(00BD6540) C4923_0
(00038708) USER32.dll
(000005BA) win32u.dll
(000353D6) USER32.dll
(0005A0B4) ntdll.dll
(00035220) USER32.dll
(0002CC1B) UXTHEME.DLL
(0002C46A) UXTHEME.DLL
(0002C477) UXTHEME.DLL
(0002DD20) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00040C09) USER32.dll
(000372C5) USER32.dll
(000370D8) USER32.dll
(00037509) USER32.dll
(000370D8) USER32.dll
(00036EDB) USER32.dll
(00091103) USER32.dll
(0002BAD7) USER32.dll
(000746CB) ntdll.dll
(0000001A) win32u.dll
(0003B674) USER32.dll
(0003B529) USER32.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDACA) Vcl::Forms::TApplication::HandleMessage
(004DDE09) Vcl::Forms::TApplication::Run
(0015C27B) Execute
(000325C3) UXTHEME.DLL
(000325F0) UXTHEME.DLL
(0002EADF) UXTHEME.DLL
(0002E753) UXTHEME.DLL
(00035F95) USER32.dll
(00035F9D) USER32.dll
(00035F62) USER32.dll
(004DC941) Vcl::Forms::_17039
(0004BA87) ntdll.dll
(00040C09) USER32.dll
(000372C5) USER32.dll
(0005A0B4) ntdll.dll
(000370D8) USER32.dll
(00037509) USER32.dll
(000048E7) wWinMain
(0016329C) __AfterConstruction
(00BDEDCD) TDesktopFontManager::TDesktopFontManager
(0005F254) ntdll.dll
(0016CB5C) System::UStrClr
(001696E4) System::GetMem
(0016CAA2) System::NewUnicodeString
(0016DBDB) System::UStrSetLength
(0016DC23) System::UStrCat
(0005B86D) ntdll.dll
(00C47734) __Mtxunlock
(0005F254) ntdll.dll
(00C43BA1) std::set_new_handler
(00C445AC) std::_Winit::_Winit
(00C5FE23) __unlock_exit
(002EB880) System::Syncobjs::TCriticalSection::TCriticalSection
(00C5E66D) _atexit
(000A772B) C13_7
(00

The problem happens rarely. I cannot reproduce it.

info@...

Invalid access to memory - Vcl::Comctrls::TListColumn::DoChange

2026-10-20 09:44

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Invalid access to memory.

Stack trace:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(000B51E0) ntdll.dll
(000B51AF) ntdll.dll
(0006CC4E) ntdll.dll
(0007962A) ntdll.dll
(000272BE) USER32.dll
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(00040403) USER32.dll
(00027541) USER32.dll
(000002AA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(0002A767) USER32.dll
(0002A7A1) USER32.dll
(0002A77C) USER32.dll
(000382E7) ntdll.dll
(00040821) TCustomScpExplorerForm::Dispatch
(0002AE8A) UXTHEME.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(0050F041) Vcl::Appevnts::TCustomApplicationEvents::DoIdle
(003CF515) Vcl::Controls::TWinControl::WndProc
(00037F66) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00038870) UXTHEME.DLL
(00BD6540) C4923_0
(0003FEDD) ntdll.dll
(0003F732) ntdll.dll
(00028229) USER32.dll
(000006FA) win32u.dll
(00026884) USER32.dll
(00040CCA) ntdll.dll
(00023AF9) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00038CC1) USER32.dll
(00027D78) USER32.dll
(00027A63) USER32.dll
(0002781B) USER32.dll
(000C35C7) USER32.dll
(00079604) ntdll.dll
(00031AC5) USER32.dll
(000319BC) USER32.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDACA) Vcl::Forms::TApplication::HandleMessage
(004DDE09) Vcl::Forms::TApplication::Run
(0015C27B) Execute
(0002809F) ntdll.dll
(00026383) UXTHEME.DLL
(0002A767) USER32.dll
(0002A7A1) USER32.dll
(0002A77C) USER32.dll
(000AFFA8) ntdll.dll
(004DD1A7) Vcl::Forms::TApplication::WndProc
(00027E82) USER32.dll
(00027E12) USER32.dll
(00027A63) USER32.dll
(00027E79) USER32.dll
(00028F04) USER32.dll
(000048E7) wWinMain
(0016329C) __AfterConstruction
(00BDEDCD) TDesktopFontManager::TDesktopFontManager
(000456AB) ntdll.dll
(0016CB5C) System::UStrClr
(001696E4) System::GetMem
(0016CAA2) System::NewUnicodeString
(0016DBDB) System::UStrSetLength
(00C4B921) __internal_malloc
(0006068D) ntdll.dll
(00094F99) ntdll.dll
(00050714) ntdll.dll
(00094F99) ntdll.dll
(00050714) ntdll.dll
(00C5FE23) __unlock_exit
(002EB880) System::Syncobjs::TCriticalSection::TCriticalSection
(00C5E66D) _atexit
(000A772B) C13_7
(00C5FCA4) __init_exit_proc
(00C5FFED) C7910_0
(00014D47) KERNEL32.DLL
(0006B759) ntdll.dll
(0006B6DC) ntdll.dll

The problem happens rarely. I cannot reproduce it.

juliensalmon@...

Invalid access to memory - Vcl::Comctrls::TListColumn::DoChange

2026-10-16 16:48

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.7

Error message:
Invalid access to memory.

Stack trace:
(00440F23) Vcl::Comctrls::TListColumn::DoChange
(000B51E0) ntdll.dll
(000B51AF) ntdll.dll
(0006CC4E) ntdll.dll
(0007962A) ntdll.dll
(0013F0FA) TCustomCommandType::LoadExtension
(000370EA) gdi32full.dll
(0003711E) gdi32full.dll
(00094F99) ntdll.dll
(005229DF) Pastools::_16427
(00441150) Vcl::Comctrls::TListColumn::SetWidth
(000459C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BD79C1) C4923_5
(00040403) USER32.dll
(00027541) USER32.dll
(000002AA) win32u.dll
(003CE5C6) Vcl::Controls::TWinControl::UnlockDrawing
(004D799D) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D7A5B) Vcl::Forms::TCustomForm::WMDpiChanged
(00040E04) TCustomScpExplorerForm::WMDpiChanged
(00040821) TCustomScpExplorerForm::Dispatch
(00092B4D) ntdll.dll
(00050714) ntdll.dll
(0002AE8A) UXTHEME.DLL
(003CA36A) Vcl::Controls::TControl::WndProc
(0003FEDD) ntdll.dll
(003CF515) Vcl::Controls::TWinControl::WndProc
(000D1BFA) InProcessClient32.dll
(00026580) USER32.dll
(004D36EC) Vcl::Forms::TCustomForm::WndProc
(00BD6540) C4923_0
(0009F4D1) InProcessClient32.dll
(0009F359) InProcessClient32.dll
(00028229) USER32.dll
(00094F99) ntdll.dll
(00040CCA) ntdll.dll
(00023AF9) UXTHEME.DLL
(003CEA20) Vcl::Controls::TWinControl::MainWndProc
(00235394) System::Classes::_18364
(00038CC1) USER32.dll
(00027D78) USER32.dll
(00027A63) USER32.dll
(00027E79) USER32.dll
(0002781B) USER32.dll
(000C35C7) USER32.dll
(00079604) ntdll.dll
(000001AA) win32u.dll
(00031AC5) USER32.dll
(00027D78) USER32.dll
(000319BC) USER32.dll
(00027E79) USER32.dll
(000A56E0) InProcessClient32.dll
(000A57E1) InProcessClient32.dll
(000A5634) InProcessClient32.dll
(004DD9A8) Vcl::Forms::TApplication::ProcessMessage
(004DDAB2) Vcl::Forms::TApplication::ProcessMessages
(008E770F) TDriveView::ReadSubDirs
(0054A8DB) Driveviewint::TDriveViewInt::CallBackValidateDir
(00027A63) USER32.dll
(00027E79) USER32.dll
(0002781B) USER32.dll
(000329D7) USER32.dll
(0007727A) ntdll.dll
(000329EB) USER32.dll
(00079604) ntdll.dll
(000001EA) win32u.dll
(000290BB) USER32.dll
(00040403) USER32.dll
(00027541) USER32.dll
(00434195) Vcl::Comctrls::TTreeNode::GetChildren
(005397FE) Customdriveview::_16447
(0053986D) Customdriveview::TCustomDriveView::IterateSubTree
(0054ABDA) Driveviewint::TDriveViewInt::ValidateDirectoryEx
(005396EB) Customdriveview::TCustomDriveView::ValidateDirectory
(0054B183) Driveviewint::TDriveViewInt::ChangeTimerOnTimer
(00479627) Vcl::Extctrls::TTimer::Timer
(00479507) Vcl::Extctrls::TTimer::WndProc
(00235394) System::Classes::_18364
(00038CC1) USER32.dll
(00027D78) USER32.dll
(00027A63) USER32.dll
(000A575B) InProcessClient32.dll
(00026D45) USER32.dll
(000268AB) USER32.dll
(004DDA87) Vcl::Forms::TApplication::ProcessMessage
(004DDACA) Vcl::Forms::TApplication:%3

The problem happens rarely. I cannot reproduce it.

steffen.engewald@...

Invalid access to memory - Vcl::Comctrls::TListColumn::DoChange

2026-09-23 12:50

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.6.3

Error message:
Invalid access to memory.

Stack trace:
(00441D7B) Vcl::Comctrls::TListColumn::DoChange
(000B4BE0) ntdll.dll
(000B4BAF) ntdll.dll
(0006E6EE) ntdll.dll
(0007AF7A) ntdll.dll.KiUserExceptionDispatcher
(00441FA8) Vcl::Comctrls::TListColumn::SetWidth
(00044D7D) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BF36D5) C4927_5
(0003FDB3) USER32.dll
(00027081) USER32.dll.SendMessageW
(000002AA) win32u.dll.NtUserRedrawWindow
(003CF41E) Vcl::Controls::TWinControl::UnlockDrawing
(004D87F5) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D88B3) Vcl::Forms::TCustomForm::WMDpiChanged
(000401BC) TCustomScpExplorerForm::WMDpiChanged
(0002A2AC) USER32.dll
(0003A177) ntdll.dll.RtlDeactivateActivationContextUnsafeFast
(004A3327) Vcl::Themes::TStyleManager::GetIsCustomStyleActive
(004A32FC) Vcl::Themes::TStyleManager::IsCustomStyleAvailable
(00038691) USER32.dll
(0003FBD8) TCustomScpExplorerForm::Dispatch
(000278B8) USER32.dll
(000279C2) USER32.dll
(00027952) USER32.dll
(00032E47) USER32.dll.GetWindowThreadProcessId
(000007EA) win32u.dll.NtUserGetObjectInformation
(003CB1C2) Vcl::Controls::TControl::WndProc
(00028EBF) UXTHEME.DLL
(003D036D) Vcl::Controls::TWinControl::WndProc
(004D4544) Vcl::Forms::TCustomForm::WndProc
(0002A84C) UXTHEME.DLL
(00038C10) UXTHEME.DLL
(00BF20CE) C4927_0
(00041CBD) ntdll.dll
(00041512) ntdll.dll
(00027D69) USER32.dll
(000006FA) win32u.dll.NtUserSetWindowLong
(000263C4) USER32.dll
(00094A99) ntdll.dll
(00042AAA) ntdll.dll.RtlReleaseSRWLockExclusive
(00023B19)UXTHEME.DLL
(003CF878) Vcl::Controls::TWinControl::MainWndProc
(002361EC) System::Classes::_18364
(00038691) USER32.dll
(000278B8) USER32.dll
(000275A3) USER32.dll
(000279B9) USER32.dll
(0002735B) USER32.dll
(000BE957) USER32.dll
(0007AF54) ntdll.dll.KiUserCallbackDispatcher
(000001AA) win32u.dll.NtUserPeekMessage
(00031765) USER32.dll
(0016A240) System::TMonitor::TryEnter
(00169D68) System::TMonitor::Enter
(00169BD0) System::TMonitor::CheckOwningThread
(00169EF6) System::TMonitor::Exit
(0003165C) USER32.dll.PeekMessageW
(0000023A) win32u.dll.NtUserWaitMessage
(004DE800) Vcl::Forms::TApplication::ProcessMessage
(004DE922) Vcl::Forms::TApplication::HandleMessage
(003D3599) Vcl::Controls::TWinControl::GetHandle
(004D9A86) Vcl::Forms::TCustomForm::ShowModal
(00B9AEA7) TMessageForm::ShowModal
(00148C01) ExecuteMessageDialog
(0014A50A) MoreMessageDialog
(00160625) System::UnicodeString::UnicodeString
(0014B8EB) ExceptionMessageDialog
(001482F1) TMessageParams::TMessageParams
(0014BCE0) FatalExceptionMessageDialog
(00148185) TMessageParams::Reset
(001605B7) System::UnicodeString::~UnicodeString
(0039DD89) System::Internal::Strhlpr::UnicodeFree
(00102D46) ShowExtendedExceptionEx
(0002735B) USER32.dll
(00032677) USER32.dll
(00078BDA) ntdll.dll.ZwCallbackReturn
(0007AF54) ntdll.dll.KiUserCallbackDispatcher
(000001EA) win32u.dll.NtUserMessageCall
%2

The problem happens rarely. I cannot reproduce it.

olevon@...

Accès mémoire invalide - Vcl::Comctrls::TListColumn::DoChange

2026-07-13 10:09

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.6.2

Error message:
Accès mémoire invalide.

Trace de la pile :
(00440B6F) Vcl::Comctrls::TListColumn::DoChange
(000B41C0) ntdll.dll
(000B418F) ntdll.dll
(0006E4FE) ntdll.dll
(0007AD8A) ntdll.dll.KiUserExceptionDispatcher
(00041302) ntdll.dll
(0003805A) gdi32full.dll.GdiRealizationInfo
(0003808E) gdi32full.dll.GdiRealizationInfo
(00094116) ntdll.dll
(00522633) Pastools::_16427
(00440D9C) Vcl::Comctrls::TListColumn::SetWidth
(00044CE1) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BF12F5) C4925_5
(0003FDF3) USER32.dll
(00027081) USER32.dll.SendMessageW
(000002AA) win32u.dll.NtUserRedrawWindow
(003CE212) Vcl::Controls::TWinControl::UnlockDrawing
(004D75E9) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D76A7) Vcl::Forms::TCustomForm::WMDpiChanged
(00040120) TCustomScpExplorerForm::WMDpiChanged
(0002A28C) USER32.dll
(00039F67) ntdll.dll.RtlDeactivateActivationContextUnsafeFast
(004A211B) Vcl::Themes::TStyleManager::GetIsCustomStyleActive
(004A20F0) Vcl::Themes::TStyleManager::IsCustomStyleAvailable
(00038731) USER32.dll
(0003FB3C) TCustomScpExplorerForm::Dispatch
(000278B8) USER32.dll
(000279C2) USER32.dll
(00027952) USER32.dll
(00032E37) USER32.dll.GetWindowThreadProcessId
(000007EA) win32u.dll.NtUserGetObjectInformation
(003C9FB6) Vcl::Controls::TControl::WndProc
(000296DF) UXTHEME.DLL
(003CF161) Vcl::Controls::TWinControl::WndProc
(004D3338) Vcl::Forms::TCustomForm::WndProc
(0002B06C) UXTHEME.DLL
(0003A240) UXTHEME.DLL
(00BEFCEE) C4925_0
(00041AAD) ntdll.dll
(00041302) ntdll.dll
(00027D69) USER32.dll
(000006FA) win32u.dll.NtUserSetWindowLong
(000263C4) USER32.dll
(00094116) ntdll.dll
(0004289A) ntdll.dll.RtlReleaseSRWLockExclusive
(00024339)UXTHEME.DLL
(003CE66C) Vcl::Controls::TWinControl::MainWndProc
(00234FE0) System::Classes::_18364
(00038731) USER32.dll
(000278B8) USER32.dll
(000275A3) USER32.dll
(0002735B) USER32.dll
(000B24D7) USER32.dll
(0007AD64) ntdll.dll.KiUserCallbackDispatcher
(000001EA) win32u.dll.NtUserMessageCall
(0002A36B) USER32.dll
(00027D69) USER32.dll
(000623B2) USER32.dll
(0002A148) USER32.dll
(0002BD59) UXTHEME.DLL
(000532DF) UXTHEME.DLL
(00027993) UXTHEME.DLL
(00026BC3) UXTHEME.DLL
(0002A277) USER32.dll
(00038731) USER32.dll
(000278B8) USER32.dll
(000275A3) USER32.dll
(00082A74) COMCTL32.DLL
(00039F67) ntdll.dll.RtlDeactivateActivationContextUnsafeFast
(000278B8) USER32.dll
(00027025) USER32.dll.CallWindowProcW
(003CF269) Vcl::Controls::TWinControl::DefaultHandler
(004D57B2) Vcl::Forms::TCustomForm::DefaultHandler
(003D0F95) Vcl::Controls::TWinControl::WMSysCommand
(004D6D81) Vcl::Forms::TCustomForm::WMSysCommand
(0003FBB3) TCustomScpExplorerForm::Dispatch
(00027025) USER32.dll.CallWindowProcW
(003C9FB6) Vcl::Controls::TControl::WndProc
(00039F67) ntdll.dll.RtlDeactivateActivationContextUnsafeFast
(003CF161) Vcl::Controls::TWinControl::WndProc
(00234FE0) System::Classes::_18364
%2

The problem happens rarely. I cannot reproduce it.

test@...

Invalid access to memory - Vcl::Comctrls::TListColumn::DoChange

2026-04-20 14:56

<Try to describe precise steps that lead to the problem (where do you click, what keys do you press, what do you see, etc.)>
<If relevant, consider attaching a session log file or a screenshot)>

WinSCP 6.6.1

Error message:
Invalid access to memory.

Stack trace:
(0043F173) Vcl::Comctrls::TListColumn::DoChange
(005EE534) Jclhookexcept::_16406
(005EE71D) Jclhookexcept::_16409
(00C7798A) ____ExceptionHandler
(000B36B0) ntdll.dll
(000B367F) ntdll.dll
(0006DD2E) ntdll.dll
(0007A5AA) ntdll.dll.KiUserExceptionDispatcher
(00041532) ntdll.dll
(0003801A) gdi32full.dll.GdiRealizationInfo
(0003804E) gdi32full.dll.GdiRealizationInfo
(00093606) ntdll.dll
(00520BAB) Pastools::_16427
(0043F3A0) Vcl::Comctrls::TListColumn::SetWidth
(0004433D) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BEB671) C4927_5
(0003FDD3) USER32.dll
(00026D71) USER32.dll.SendMessageW
(0000028A) win32u.dll.NtUserRedrawWindow
(003CC816) Vcl::Controls::TWinControl::UnlockDrawing
(004D5BED) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D5CAB) Vcl::Forms::TCustomForm::WMDpiChanged
(0003F848) TCustomScpExplorerForm::WMDpiChanged
(00029F7C) USER32.dll
(0003A197) ntdll.dll.RtlDeactivateActivationContextUnsafeFast
(004A071F) Vcl::Themes::TStyleManager::GetIsCustomStyleActive
(004A06F4) Vcl::Themes::TStyleManager::IsCustomStyleAvailable
(000387B1) USER32.dll
(0003F264) TCustomScpExplorerForm::Dispatch
(000275A8) USER32.dll
(000276B2) USER32.dll
(00027642) USER32.dll
(00032AC7) USER32.dll.GetWindowThreadProcessId
(000007CA) win32u.dll.NtUserGetObjectInformation
(003C85BA) Vcl::Controls::TControl::WndProc
(0002970F) UXTHEME.DLL
(003CD765) Vcl::Controls::TWinControl::WndProc
(004D193C) Vcl::Forms::TCustomForm::WndProc
(0002B09C) UXTHEME.DLL
(0003A010) UXTHEME.DLL
(00BEA06A) C4927_0
(00041CDD) ntdll.dll
(00041532) ntdll.dll
(00027A59) USER32.dll
(000006DA) win32u.dll.NtUserSetWindowLong
(000260B4) USER32.dll
(00093606) ntdll.dll
(00042ACA) ntdll.dll.RtlReleaseSRWLockExclusive
(00024369)UXTHEME.DLL
(003CCC70) Vcl::Controls::TWinControl::MainWndProc
(002336B8) System::Classes::_18364
(000387B1) USER32.dll
(000275A8) USER32.dll
(00027293) USER32.dll
(0002704B) USER32.dll
(000AAB77) USER32.dll
(0007A584) ntdll.dll.KiUserCallbackDispatcher
(003CB394) Vcl::Controls::_17058
(003CB513) Vcl::Controls::TWinControl::AlignControls
(004CEA86) Vcl::Forms::TScrollingWinControl::AlignControls
(004D1BFA) Vcl::Forms::TCustomForm::AlignControls
(003D0B9F) Vcl::Controls::TWinControl::GetClientRect
(004D0E07) Vcl::Forms::TCustomForm::GetClientRect
(003CB5FA) Vcl::Controls::TWinControl::AlignControl
(003CE71D) Vcl::Controls::TWinControl::WMSize
(004CF15C) Vcl::Forms::TScrollingWinControl::WMSize
(00166C83) System::TObject::Dispatch
(0003F2DB) TCustomScpExplorerForm::Dispatch
(00022EC2) USER32.dll.GetSystemMetricsForDpi
(003C85BA) Vcl::Controls::TControl::WndProc
(00009F94) GDI32.dll.ExtTextOutW
(00009FA0) GDI32.dll.ExtTextOutW
(000B9ADF) gdi32full.dll
(0002546C) UXTHEME.DLL
(000B9B22) gdi32full.dll.LpkExtTextOut
(0005220E) gdi32full.dll.ExtTextOutWImpl
(000001CA) win32u.dll.NtUserMessageCa

The problem happens rarely. I cannot reproduce it.

martin

Re: Invalid access to memory - Vcl::Comctrls::TListColumn::DoChange

2026-03-16

@john: Thanks for your report.
I have sent you an email with a debug version of WinSCP to the address you have used to register on this forum.

john@...

Invalid access to memory - Vcl::Comctrls::TListColumn::DoChange

2026-03-13 00:55

winscp is redrawing the windows every minute, reconnects to sftp server every couple of minutes, interrupt and retakes file transfer, This is behaviour since winscp 6.5. Happens on my HP Z4 workstation with 3 4K monitors. On my laptop everything works flawless. I reinstalled windows but it didn't change the problem.

WinSCP 6.6

Error message:
Invalid access to memory.

Stack trace:
(0043EA33) Vcl::Comctrls::TListColumn::DoChange
(005EDDC0) Jclhookexcept::_16406
(005EDFA9) Jclhookexcept::_16409
(00C754DA) ____ExceptionHandler
(000B3570) ntdll.dll
(000B353F) ntdll.dll
(0006DD0E) ntdll.dll
(0007A7AA) ntdll.dll.KiUserExceptionDispatcher
(00003662)AppHook32_73206A66-D4B5-49D3-B33A-645E29D66BB3.dll
(003A75A5) Vcl::Graphics::TCustomCanvas::TextHeight
(00520419) Pastools::CalculateTextHeight
(00520436) Pastools::_16426
(0052046B) Pastools::_16427
(0043EC60) Vcl::Comctrls::TListColumn::SetWidth
(000441C5) TCustomScpExplorerForm::FormAfterMonitorDpiChanged
(00BE9A3D) C4925_5
(0003F9D3) USER32.dll
(00026941) USER32.dll.SendMessageW
(0000028A) win32u.dll.NtUserRedrawWindow
(003CC0D6) Vcl::Controls::TWinControl::UnlockDrawing
(004D54AD) Vcl::Forms::TCustomForm::DoAfterMonitorDpiChanged
(004D556B) Vcl::Forms::TCustomForm::WMDpiChanged
(0003F6D0) TCustomScpExplorerForm::WMDpiChanged
(00041CDD) ntdll.dll
(000075DA)AppHook32_73206A66-D4B5-49D3-B33A-645E29D66BB3.dll
(0003F174) TCustomScpExplorerForm::Dispatch
(000326B7) USER32.dll.GetWindowThreadProcessId
(000007CA) win32u.dll.NtUserGetObjectInformation
(003C7E7A) Vcl::Controls::TControl::WndProc
(0002965F) UXTHEME.DLL
(000935C6) ntdll.dll
(00052304) ntdll.dll.RtlLeaveCriticalSection
(00051D75) ntdll.dll
(000521B9) ntdll.dll
(003CD025) Vcl::Controls::TWinControl::WndProc
(004D11FC) Vcl::Forms::TCustomForm::WndProc
(0002AFEC) UXTHEME.DLL
(00BE84CA) C4925_0
(00038DA1) UXTHEME.DLL
(00027629) USER32.dll
(000006DA) win32u.dll.NtUserSetWindowLong
(00025C84) USER32.dll
(000935C6) ntdll.dll
(00042ACA) ntdll.dll.RtlReleaseSRWLockExclusive
(000242B9)UXTHEME.DLL
(003CC530) Vcl::Controls::TWinControl::MainWndProc
(00232F78) System::Classes::_18364
(000383B1) USER32.dll
(00027178) USER32.dll
(00026E63) USER32.dll
(00027279) USER32.dll
(00157C23) KERNELBASE.dll.GetProcessMitigationPolicy
(00078304) ntdll.dll.ZwQueryInformationProcess
(001579FA) KERNELBASE.dll.GetProcessMitigationPolicy
(00026C1B) USER32.dll
(000AA437) USER32.dll
(0007A784) ntdll.dll.KiUserCallbackDispatcher
(003CAC54) Vcl::Controls::_17058
(003CADD3) Vcl::Controls::TWinControl::AlignControls
(004CE346) Vcl::Forms::TScrollingWinControl::AlignControls
(004D14BA) Vcl::Forms::TCustomForm::AlignControls
(003D045F) Vcl::Controls::TWinControl::GetClientRect
(004D06C7) Vcl::Forms::TCustomForm::GetClientRect
(003CAEBA) Vcl::Controls::TWinControl::AlignControl
(003CDFDD) Vcl::Controls::TWinControl::WMSize
(004CEA1C) Vcl::Forms::TScrollingWinControl::WMSize
(00166543) System::TObject::Dispatch
(0003F1EB) TCustomScpExplorerForm::Dispatch
(00041CDD) ntdll.dll
(00041532) ntdll.dll
(003C7E7A) Vcl::Controls::TControl::WndProc
(0008FC11) ntdll.dll
(0008FDA2) ntdll.dll
(00091289) ntdll.dll
(00041CDD) ntdll.dll
(0056DDC6) Tb2hook::_16395
(00031E5A) USER32.dll
(003CD025) Vcl:

I know how to reproduce the problem or the problem happens frequently enough. I wish to be contacted by the WinSCP team to help resolving the problem.

Topic review

Documentation

Support

Associations

Follow Us