pborole wrote:

WinSCP.SessionRemoteException: Copying files to remote side failed. The supplied message is incomplete. The signature was not verified.

This is a known bug in IIS server:
https://winscp.net/eng/docs/message_supplied_message_incomplete

Hi prikryl,

I have updated or added refrence of WinScpNet.dll 5.1.5 To 5.7.5 to my application
Now i am facing different issue While upload file to FTP server.

session.PutFiles(dirSource + "\\" + file.Name, remotePath, false, transferOptions);

transferResult.IsSuccess always returns false

WinSCP.SessionRemoteException: Copying files to remote side failed. The supplied message is incomplete. The signature was not verified.

Please let me know How can I resolve this?

This is a known bug in old versions of WinSCP .NET assembly.
You have to upgrade the assembly and restart the machine:
https://winscp.net/tracker/996

Hi Sir,

I am really frustrating with this issue.

I have implemented com lib winscp.dll 5.1.5 with C# code it working file as of now
plz let me know how can resolve the "WinSCP process terminated with exit code 3 and output" issue

Upgradtion will not help me as i have to made the C# code with latest version everytime

Restrating machine is not feasible solution as it works on production server.

Please Help me