The Microsoft Exchange Site Replication Service could not initialize the ESE backup/restore interface. HrESEBackupRestoreRegister returned {error code}. You will not be able to perform online backup and restore of the SRS until the service is restarted.

Details
Product:	Exchange
Event ID:	1401
Source:	MSExchangeSRS
Version:	6.0
Component:	Site Replication Service
Symbolic Name:	DIRLOG_DBINIT_BACKRESTREG_FAILED
Message:	The Microsoft Exchange Site Replication Service could not initialize the ESE backup/restore interface. HrESEBackupRestoreRegister returned {error code}. You will not be able to perform online backup and restore of the SRS until the service is restarted.

User Action
Stop and restart the site replication service and try the operation again.