@tczx3: Thanks for your report.

This issue is being tracked already:
Issue 2381 – Restoring ability to restart Explorer to allow upgrade of drag&drop shell extension, when installing for current user, as after-restart replacement is not possible without Administrator privileges

This occurred for me for the first time today when I went to upgrade to 6.5.2. I don't remember the exact patch version that I was on before but it was 6.3.x for sure.
I have the program installed for the local user and the install never attempted to prompt for admin credentials. Never had this happen in the past. Odd indeed.

Thanks for your post. This issue has been added to the tracker:
Issue 322 – Resolve upgrading dragext with non-priviledged account.

@martin: Yes, you seem to be right: non-administrative accounts may not schedule files to be moved at reboot. In this case, the setup should either:

• require the user to uninstall any previous version and then install the new one; or
  
• require the user to restart the system and log back in to complete the upgrade.
  

angel_tsankov wrote:

The problem seems to be that this file is in use at the time of upgrade, so it should probably be scheduled to be overwritten upon reboot.

The setup does that. However I do not know if regular (non administrative) account is able to do this.

Hi. I have the same problem upgrading 4.1.6 to 4.1.7 with the exact same error message. I have not yet tried any resolution, but uninstalling 4.1.6 and then installing 4.1.7 should works since DragExt.dll would be removed during the uninstallation (or upon reboot).

The problem seems to be that this file is in use at the time of upgrade, so it should probably be scheduled to be overwritten upon reboot.

Edit: I'm using a regular (non-administrative) account -- the same that I used to install 4.1.6.

Windows XP SP2 German

Thanks. What version of Windows are you using?

During installation (full upgrade) a message box shows up with following content:

Message text:

C:\Programme\WinSCP\DragExt.dll

An error occured while trying to replace the existing file:
DeleteFile failed; code 5.
Access denied.

Click Retry to try again, Ignore to skip this file (not recommended), or Abort to cancel installation.

• Retry ... results in the same error
  
• Ignore ... will install all the new files except DragExt.dll.
  
• Abort ... cancels the upgrade
  

cu, guido

Do you have a full error message? The setup should not have a problems with this. It should schedule replacement of the DLL on the next windows restart automatically.

Does anyone have the same problem?

During updating to the new version an error occurred. The installation program could not overwrite the existing DragExt.dll.

My workaround:

1. Manually deinstall the DragExt.dll with the command:
   

   regsvr32 /u {path to winscp}\DragExt.dll

   
   
2. Restart Windows
   
3. Now Updating works!
   

Under Windows XP Pro I am logged in as "main user" (german Hauptbenutzer) and not as an Administrator.

cu, helpy