I have been working with Windows 2003 several years. I have just run into a strange security setting issue that I believe I missed to disable. Theoretically, we should not able to join the client pc to a domain AD without admin userid/pass. After setting up windows 2003 server R2/Ent, I am able to join and disjoint a client PC to a domain controller. I’m I miss something or how can I disable the feature that must user admin userid/pass in order to join and disjoint a client pc to a domain controller. Please help…greatly thanks in advnace.