[Samba] winbind use default domain problem after upgrade

Rowland penny rpenny at samba.org
Wed Mar 3 16:49:09 UTC 2021

On 03/03/2021 16:10, Perttu Aaltonen via samba wrote:
> After upgrading a file server from Ubuntu 19.10 with Samba 4.10.5 to Ubuntu 20.04 with Samba 4.13.2, "winbind use default domain” doesn’t seem to work anymore.
> I went through the release notes in between but nothing stood out for me that would require a configuration change.
> Before the upgrade:
> [2021/02/23 20:05:31.553745,  3] ../../auth/auth_log.c:629(log_authentication_event_human_readable)
>    Auth: [SMB,(null)] user []\[user] at [Tue, 23 Feb 2021 20:05:31.553731 EET] with [NTLMv1] status [NT_STATUS_OK] workstation [] remote host [ipv4:] became [DOMAIN]\[user] [SID redacted]. local host [ipv4:]
> After the upgrade:
> [2021/02/23 20:19:04.581131,  2] ../../auth/auth_log.c:635(log_authentication_event_human_readable)
>    Auth: [SMB,(null)] user []\[user] at [Tue, 23 Feb 2021 20:19:04.581108 EET] with [NTLMv1] status [NT_STATUS_NO_SUCH_USER] workstation [] remote host [ipv4:] mapped to []\[user]. local host [ipv4:]
> Do I need to change something in the configuration or have I hit some kind of bug?
> Thanks!

Strange, it works for myself (not that it helps you)

Can you give us a bit more info, What is the AD DC ?

Why are you still using SMBv1 ?

Please post your smb.conf


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