Thank you. I will try it

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.

<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 5.11.1

Error message:
Invalid access to memory.

Stack trace:
(0061E8EB)
(0089C862)
(0089E8CA)
(0089B684)
(000851CF) ntdll.dll
(00073161) ntdll.dll.KiUserExceptionDispatcher
(00620B31)
(00620BFC)
(0061694B)
(006169D3)
(00618687)
(00618A3E)
(0061CBAC)
(0061CD02)
(0061945D)
(007B8122)
(007B7ED4)
(007B794D)
(007B780B)
(007B74D5)
(007961A1)
(006E2907)
(006DDA70)
(000A0CE3)
(00017742) KERNEL32.DLL.BaseThreadInitThunk
(0006482B) ntdll.dll.RtlGetAppContainerNamedObjectPath
(000647F8) ntdll.dll.RtlGetAppContainerNamedObjectPath
Connection failed.

Status: unknown_rel_addr

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.