No Authentication after closing the primary Domain controller
ISSUE: there are 3 domain controllers on the environment, one of them is the primary DC, when we try closing it, outlook can't authenticate with exchange server. an outlook prompt keeps appearing we want to test in case of update or outage that nothing could go wrong Cause: The Primary Domain Controller had all FSMO roles including PDC role which is responsible for authentication. Resolution: Before closing the DC, we transferred the PDC role to another Domain controller, then shutdown the primary one To do so please follow: Click Start, point to Administrative Tools, and then click Active Directory Users and Computers. Right-click Active Directory Users and Computers , and then click Connect to Domain Controller (If you on another DC) . Do one of the following actions: In the Enter the name of another domain controller box, type the name of the domain controller that will be the new role holder, and then click OK. -or- In the Or, select an available domain controller list,