Hi all, I am facing the error as bellow. =Aug 26 07:58:06 test winbindd[5118]: [2007/08/26 07:58:06, 0] sam/idmap_rid.c:rid_idmap_get_id_from_sid(461) Aug 26 07:58:06 test winbindd[5118]: rid_idmap_get_id_from_sid: no suitable range available for sid: S-1-5-32-545 = My idmap range is fine: idmap backend = idmap_rid:UP=16777216-33554431 I tried removing cache for samba and restarted it. But still the same error, i found that this sid is reserved for BUILTIN\Users from http://support.microsoft.com/kb/163846 I have discussed this on samba irc channel and found that this idmap backend is deprecated and dont exist in new code. Would appreciate if some one can guide me in this. Regards,