We have two domain controllers (W2K8) and when performing a manual AD replication between them the following error is detailed;
The following error occured during the attempt to synchronize context. The target principle name is incorrect.
On DC1 when you manually replicate AD reports the connections as OK to DC2, on DC2 the error appears. Checking AD Users and computers on DC1 shows it as the operations master. Checking on DC2 shows error. Checking in AD sites/svcs shows the same. DC3 is fine to all others except going from DC2 to DC1.
DC2 has Exchange 2007 installed, Symantec BU Exec 12 required the install of the Exchange Management Console yesterday on DC1 which hosts Backup Exec. Restarting AD Services is to no avail. Checking Logs on DC1 don't list any issues. Checking the logs on DC2 showlots of 1308 KCC errors having issues. DC1 also has had Network Policy Server installed 3 days ago.