You didn't disable the resume support:

. 2023-08-16 11:52:05.692 PrTime: Yes; PrRO: No; Rght: rw-r--r--; PrR: No (No); FnCs: N; RIC: 0100; Resume: S (102400); CalcS: Yes; Mask: *.*

You will find the log session in the attachment.

Please post a session log file showing that.

I have tried this without success.

Only an FTP connection is working.

Thanks for your reply.

Try disabling transfer resume:
https://winscp.net/eng/docs/ui_pref_resume

Hello,

I'm facing an issue while I try to transfer .docx or .pdf file from an SFTP connection.
At each time I got a Permission Denied because of a .filepart extension as you can see on the picture.
I have tried to do the same things with an FTP connection and it works.

Can you explain me why it doesn't work with an SFTP connection?

Thanks