Seyi, Check to make sure the fsmo roles were transferred succesfully to your remaining DC now the other machine has been demoted to a member server. You can use the User and Computer mmc for this - Right Click on the Domain name and select Operations Masters. The existing DC should hold all these roles.
Once you've checked out the above - make your existing DC a GC. This should fix things. Sounds like your only GC disappeared when you demoted that machine to a member server ----- Original Message ----- From: "Seyi Owoeye" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Tuesday, November 13, 2001 6:04 PM Subject: [ActiveDir] Active Directory Global Catalogue problem Hi Guys, I have a little problem over here. I am migrating a network from windows nt to windows 2000, so what i did was did, i got a desktop machine and installed nt server on the machine as a backup domain controller, i then changed the ip address range then promoted it to a primary domain controller. Now i upgraded the machine to windows 2000 and installed active directory on it, I then brought in the main server, i installed windows 2000 on it and made it an additional domain controller for the first domain controller i had installed. I then demoted the first machine as a domain contoller to a member server, so the second domain controlller is acting as the main domain controller. Now i created a new group in active directory and try to add memebers and i get this error "A global catalog (GC) cannot be contacted. A GC is needed to list the objects group membership. The GC maybe temporarily unavailable or if your enterprise does not have a domain controller configured as a GC then one should be configured. Contact your system administrator for assistance" And this is affecting my AD structure, I would be very grateful if someone could help me solve this problem. Thanx Seyi List info : http://www.activedir.org/mail_list.htm List FAQ : http://www.activedir.org/list_faq.htm List archive: http://www.mail-archive.com/activedir%40mail.activedir.org/ List info : http://www.activedir.org/mail_list.htm List FAQ : http://www.activedir.org/list_faq.htm List archive: http://www.mail-archive.com/activedir%40mail.activedir.org/
