Hi, you probably haven't setup NSS etc so that your fileserver knows about
your AD users.
Have a read here:
https://wiki.samba.org/index.php/Samba_%26_Active_Directory
Then once you have understood what needs to be done, go here:
I have a Samba-4 system running as an Active Directory server. It's
working great: computers are joined to it, users are logged in, etc. Good
job Samba developers, and thank you!
But of course I am not satisfied. Now I want to configure another server
(well, a VM) as a file server using
