[Samba] upgraded DC shows IDs instead of usernames

[Rowland penny]

On 11/05/2020 12:49, Stefan G. Weichinger via samba wrote:
> Well, it was quiet and stable for quite a while now .. thanks to all the
> devs ;-)
>
> This weekend I upgraded some Debian servers, from Debian 9.12 to 10.4
>
> One of these is a Samba-4.10.15 DC and I didn't touch the samba config
> at all.

This sounds like something outside of Samba, What do the passwd & group 
lines in /etc/nsswitch.conf contain ?

Rowland