Getting transfer error

I have an automated process and sometimes (not all of the time) I am getting an error:
Wondering if anyone has any ideas on how to avoid this.

Using WinSCP Version 5.9.2 on Windows 7 using SFTP transfer protocol.

I there any information about the problem in your SFTP server log file?

I am having the same issue. Doesn't happen all the time.
But the files it happens to, it is consistent.
My file is a text file. I've opened it in text pad, re-saved it and retried with same error.
Unfortunately I don't have access to the server side logs.

Any ideas what could cause this?

I am on version 5.9.2 as well.

Ok, for me the problem turned out to be files over 100KB.

I had to turn ResumeSupport off in my transfer options to get passed it.

Thanks for sharing your solution.

I just had the same error "cannot close remote file".

The fix was to disable transfer resume in Transfer > Endurance. But the question is, why does enabling that cause an error?

@Disco: Please post session log file.