Ok - upgraded to vsphere 5.1 from 5 - working fine for months. Today moved dns/dhcp - ad roles to 2012 server (was on sbs 03 server) - so DNS is on a server with different ip address.
Changed the ip address for each server. when i try to log in to the virtual center server with vsphere client even selecting using Windows session credentials - it won't let me log in
Using windows session creds I get a "General System error occurred"
If I try to enter the domain creds domainname\administrator - I get a "Cannot complete login due to incorrect user name"
I did change the dns serv setting for console without restarting service on esxi - dont believe that is it. I think it has to do with single sign on.
Acronis backups failing also with login errors (cant log in to vcenter serv).
How can I correct this login issue to vcenter serv