I have a resource available on my BDC, When user from another Domain trys to do a browse or find to that server he gets the error. Can browse resources on my PDC with same permissions , OK?? I try to login from exterior Domain locally I get same problem and I am the Administrator. I think something is wrong internally to Windows NT 4.0 SP6a..There is a two way trust involved. If I log into the local Domain I can get to resources no problem. When I look at the exterior users permissions in the local global group, I see this domain\unknown. It is like the trust is broken or communications betwwen PDC’s is broken. If I restart the BDC the proper permissions come back, but only for a short period of time..