707146 IRM-protected messages cannot be returned in search results if the messages are recorded and sent to an external contact in an Exchange Server 2010 environment'
2710975 Some MAPI property objects in an ANSI .pst file contain unreadable characters if you import the file by using the “New-MailboxImportRequest” cmdlet
2712001 ExTRA.exe does not collect data if you select a scheduled task for a data collection in an Exchange Server 2010 environment
2712595 Microsoft Exchange RPC Client Access service crashes when you run the New-MailboxExportRequest cmdlet in an Exchange Server 2010 environment
2716145 Store.exe crashes on an Exchange Server 2010 mailbox server if a VSAPI based antivirus software is used
2717522 Microsoft Exchange System Attendant service crashes on an Exchange Server 2010 server when you update the OAB that contains a DBCS address list
2727802 Microsoft Exchange Replication service crashes intermittently when you try to move mailboxes from an Exchange Server 2003 server to an Exchange Server 2010 server
2733415 Event ID 1 is logged on the Exchange Server 2010 Client Access server in a mixed Exchange Server 2010 and Exchange Server 2003 environment
2748767 You receive an NDR message that incorrectly contains recipients of successful message delivery in an Exchange Server 2010 environment.
2748879 You cannot access a mailbox by using an EWS application in an Exchange Server 2010 environment
2749593 Outlook logging file lists all the accepted and internal relay domains in the Exchange Server 2010 organization when you enable troubleshooting logging
2750293 Items remain in the “Recoverable Items\Deletions” folder after the retention age limit is reached in an Exchange Server 2010 environment
2763886 “The operation failed” error in the Outlook client when you open a saved message from the Drafts folder and then try to send it in an Exchange Server 2010 environment
Assume that you apply the Update Rollup 4 version 2 for Exchange Server 2010 SP2 (KB2756485), and then you apply the Update Rollup 5 version 1 (KB2719800). In this situation, when you try to run the Get-DatabaseAvailabilityGroup cmdlet, you receive the following error message:
WARNING: An unexpected error has occurred and a Watson dump is being generated: Could not load type ‘Microsoft.Exchange.Rpc.ActiveManager.AmDeferredRecoveryEntry' from assembly ‘Microsoft.Exchange.Rpc, Version=126.96.36.199, Culture=neutral, PublicKeyToken=31bf3856ad364e35'.