I updated a centos 7 without changing the samba configuration.
Before authentication worked even without having to specify the domain to the logon. After upgrading instead it is absolutely necessary to specify the domain.
user password: not work.
domain \ user password work.
la configurazione usa un backend ldap
e SERVER ROLE is CLASSIC PRIMARY DOMAIN CONTROLLER
( OT : I have 5000 windows (xp / 7/10) clients not in domain. Client workgroups are varied. Users are not expert at all and are not able to change their habits. Please help me !! :DDDD )
*** This bug has been marked as a duplicate of bug 13543 ***
For the DC itself it's fixed in bug #13722.