Comment # 3 on bug 1199973 from Andrei Borzenkov

(In reply to Martin Wilck from comment #0)

> 
> Since the update to samba-client 4.15.7+git.376.dd43aca9ab2, accessing
> shares via nautilus  doesn't work any more. Nautilus opens a pop-up showing
> "invalid argument". In the previous version 4.15.4+git.324.8332acf1a63,
> Nautilus would show a password prompt and connect successfully with the
> right password. The password prompt is never shown with 4.15.7+git.376.
> 

Likely this SAMBA commit

commit 9b6e8ae65e24788c82022e761bfb2c78b59260d9
Author: Elia Geretto <elia.f.geretto@gmail.com>
Date:   Fri Mar 11 19:32:30 2022 +0100


    s3:libsmb: Fix errno for failed authentication in SMBC_server_internal()

    In SMBC_server_internal(), when authentication fails, the errno value is
    currently hard-coded to EPERM, while it should be EACCES instead. Use the
    NT_STATUS map to set the appropriate value.

which was fixed in gvfs

https://gitlab.gnome.org/GNOME/gvfs/-/issues/611

should be safe to backport I guess.