Hi XPero, you used "BUILDIN\Adminstrators" to grant control. This code snippet retrives the translated Name (in German: VORDEFINIERT\Administratoren"). I hope this will work. Could you include this code into your tool? string getName(WellKnownSidType wksid) { SecurityIdentifier sid = new SecurityIdentifier(wksid, null); NTAccount account = (NTAccount)sid.Translate(typeof(NTAccount)); return account.Value; } getName(WellKnownSidType.BuiltinAdministratorsSid)