Hello, I have configfured in /etc/samba/smusers: root = administrator and in /etc/group: root:x:0:root,administrator Further I have mapped the groups: Administrators (S-1-5-32-544) -> root Domain Admins (S-1-5-21-3965442966-3812898117-3611004146-512) -> root But my Windows XP Clients won't the the Administrator as domain admin. I can log in as administrator but I do not have the privilidges. Does anoyone know why? Greetings Sascha