We have 3 servers in our network: 1 Windows Server 2012 R2 (Domain Controller), 2 Windows Server 2008 R2 (1 domain controller, one Exchange).
Suddenly we were unable to logon tonthe windows 2012 machine using the administratir account! We are able to logon normally to the other servers! We have tried using other admin account, disconnectiog the machine from the network, rebooting but to no avail!!!
Any help would be much appreciated!