On 15/03/2021 16:34, Oleg Blyahher via samba wrote: > So sorry! > > Version 4.12.10-Debian on Debian 10. > > Yes, it does: > > # wbinfo -s S-1-5-32-544 BUILTIN\Administrators 4 Have you given the 'Administrators' group a gidNumber ? Rowland