[Samba] Cannot set ACL for "Authenticated Users"

[Jeremy Allison]

On Fri, Apr 29, 2011 at 04:11:34PM +0200, Arnaud Lesauvage wrote:
> Yes, windows PDC running Windows 2003 R2 (NO unix extensions).
> wbinfo -u works fine.
> 
> But "wbinfo -Y S-1-5-11" returns "Could not convert sid S-1-5-11 to gid"
> And that is exactly what happened to the OP of the discussion I
> quoted in my original message.

Try "force unknown acl user = yes"