Error listing directory '/'

Hi,
For the long period all was fine. Some time ago all my connectivity attempts starts failing with

Error listening directory '/'
Could not retrieve directory listening
Unable to build data connection: EINVAL - Invalid argument passed.

As I know - no updates on FTP side. Total Commander is working fine.
Logs in attached.
My OS:
Edition Windows 11 Pro
Version 22H2
OS build 22621.1485
Experience Windows Feature Experience Pack 1000.22639.1000.0

Can you try upgrading your FileZilla FTP server to the latest version?
If that does not help, please post Total Commander log for comparison.

Hi,
Thanks for replying.
WinSCP version updated to the latest 5.21.8 and server version updated to the latest 1.6.7

Server logs in attached.

I do not see "425 Unable to build data connection: EINVAL - Invalid argument passed" in the server's log. Can you post matching WinSCP and server logs?

I found an issue. My FTP is behind a proxy. On my side I have 2 routes to that and by some reasons, WinSCP used 2 ways in parallel. After assigning WinSCP process to one route only – all works!

Thanks for sharing you findings.

More information:
Communication begins by FTP name, but later switches to interaction by IP address.