The directory server has detected that the service account used to run this service has been changed. Replication failures ...

The directory server has detected that the service account used to run this service has been changed. 
 
Replication failures may occur if two or more Active Directory Domain Services instances in the same forest simultaneously change the service accounts under which those instances are running.  
 
Additional Data 
Old service account:
%1 
New service account:
%2 
 
User Action 
For more information on these potential replication failures and how to correct them if they occur, please see http://go.microsoft.com/fwlink/?LinkId=92860.