Did you try to play with Windows Scheduler task settings? Particularly with the "Security Options".

the .net winscp exe is trigger using windows task scheduler.

OK, but how are you running it?

Hi Martin,
am running on window server 2012 server 64bit on all environments.

Thanks. Though you did not answer "In what environment are you running your code?"

sorry uploaded the wrong timeout output file.

Hi martin,

i am using
product version : 5.15.0
File version : 5.15.1.9407

attached is the winscp log output.
Thanks in advance.

Session.Timeout has to be set before Session.Open. Though I do not think it would help anyway.

In what environment are you running your code? What version of WinSCP? Please attach a complete WinSCP .NET assembly debug log file.

Hi folks,

I had set these setting
sessionOptions.Timeout = new TimeSpan(0,2, 0);
if (session.Opened == false) {
session.Open(sessionOptions);
session.Timeout = new TimeSpan(0, 3, 0);
}

but still i am hit with this timeout error.
System.NullReferenceException: Object reference not set to an instance of an object. at WinSCP.Session.CheckForTimeout(String additional) at WinSCP.Session.Open(SessionOptions sessionOptions)


from the winscp log below, it seem to get this timeout error after 60sec.
[2019-10-01 15:30:27.261Z] [0001] Session.SessionOptionsToUrlAndSwitches leaving
[2019-10-01 15:30:27.261Z] [0001] Command: [open "sftp://Oxxxxxxxx@xxxxxxxx:xx" -hostkey="ssh-rsa 2048 xx:xx:xx:xx:xx:xx:xx:xx:x:xx:xx:xx:xx:xx:xx:xx" -privatekey="xxxxxxxxxxxxxxxxxx.ppk" -timeout=120]
[2019-10-01 15:30:27.261Z] [0001] ExeSessionProcess.ExecuteCommand entering
[2019-10-01 15:30:27.261Z] [0001] ExeSessionProcess.ExecuteCommand leaving
[2019-10-01 15:31:27.276Z] [0001] Timeout waiting for WinSCP to respond - asking for callstack
[2019-10-01 15:31:27.277Z] [0001] ExeSessionProcess.RequestCallstack entering
[2019-10-01 15:31:27.294Z] [0001] Exception: System.Threading.WaitHandleCannotBeOpenedException: No handle of the given name exists.
at System.Threading.EventWaitHandle.OpenExisting(String name, EventWaitHandleRights rights)
at WinSCP.ExeSessionProcess.RequestCallstack()
[2019-10-01 15:31:27.294Z] [0001] ExeSessionProcess.RequestCallstack leaving
[2019-10-01 15:31:27.295Z] [0001] Exception: System.NullReferenceException: Object reference not set to an instance of an object.
at WinSCP.Session.CheckForTimeout(String additional)
at WinSCP.Session.Open(SessionOptions sessionOptions)
[2019-10-01 15:31:27.295Z] [0001] Session.Cleanup entering