Hi,
I have a DC at site A and a DC at site B. Both are Global Catalogues. A is Server 2008 R2 and B is Server 2003 R2. When site B went down today, site B wouldn't load Active Directory Users and Computers and no one could login. It was complaining that no DNS servers could be found. They both have themselves at Primary DNS and each other and Secondary. Why did my second DC fail when I needed it? The VPN was up through out, site B failed to lack of disk space (long storey!).
Once site B was functioning again, site A was fine. Any suggestions?
Kind regards,