FreeFileSync 14.5 issue SFTP Transfer

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Posts: 2
Joined: 16 Nov 2025

TEFTECH

Hello all, I just stared to get this error message after updating to Free File Sync 14.5. LIBSSH2_ERROR_SOCKET_SEND: Unable to send FXP_CLOSE command [libssh2_sftp_close]
This only seems to happen when transferring large BAK files. I have tried going back to the previous version, but I am still getting the same error message. Anyone else see this before and if so, what did you do to fix the issue.
Currently, I have to use FileZilla to transfer the file.
I am running this on Windows 11 pro and also on Windows Server 2022
Any help would be greatly appreciated.
Thanks
T
Posts: 4908
Joined: 11 Jun 2019

xCSxXenon

If reverting to an old version of FFS didn't fix it, I would look at the server next. Make sure it is all up to date
Posts: 2
Joined: 16 Nov 2025

TEFTECH

Thanks for the info, however, it appears to be something related to the offsite NAS. Once that Nas was Rebooted everything is back to working as it should. But thanks for the input.
Posts: 4908
Joined: 11 Jun 2019

xCSxXenon

That's....exactly what I said?