Assume that you try to move mailboxes from Microsoft Exchange Server 2003 to an Exchange Server 2010 server. In this situation, the Microsoft Replication service crashes intermittently on the Exchange Server 2010 Client Access server. Additionally, the following events are logged in the Application log:
Log Name: Application Source: MSExchange Mailbox Replication Date: Date Event ID: 1121 Task Category: Request Level: Error Keywords: Classic User: N/A Computer: Computer Description: The Microsoft Exchange Mailbox Replication service was unable to process a request due to an unexpected error. Request GUID: GUID Database GUID: GUID Error: MapiExceptionNotFound: Unable to open entry ID. (hr=0x80004005, ec=-1601)
Log Name: Application Source: MSExchange Common Date: Date Event ID: 4999 Task Category: General Level: Error Keywords: Classic User: N/A Computer: Computer Description: Watson report about to be sent for process id: Process ID, with parameters: E12, Build Type, Version Number, MSExchangeMailboxReplication, M.Exchange.MailboxReplicationService, M.E.M.MoveBaseJob.<BeginJob>b__c, System.NullReferenceException, XXX, Version Number. ErrorReportingEnabled: True
Log Name: System Source: Service Control Manager Date: Date Event ID: 7031 Task Category: None Level: Error Keywords: Classic User: N/A Computer: Computer Description: The Microsoft Exchange Mailbox Replication service terminated unexpectedly. It has done this XX time (s). The following corrective action will be taken in XX milliseconds: Restart the service.
This issue occurs because the Exchange Server 2010 Client Access server does not appropriately process the move request when it tries to remove a completed move request.
To resolve this issue, install the following update rollup:
2785908 Description of Update Rollup 5 version 2 for Exchange Server 2010 Service Pack 2
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.