The following event is logged in the Application log on each database availability group member in a Microsoft Exchange Server 2010 environment:

This issue occurs if one of the following conditions is true:

  • A remote host does not process a log copy request correctly.

  • The Get-MailboxDatabaseCopyStatus cmdlet returns the Disconnected status for the database that is mentioned in the error.


  • When this issue occurs, you may not be able to run backups on the server.

  • The remote host may process the next log copy request correctly after few seconds.


To resolve this issue, install the following update rollup:

2579150 Description of Update Rollup 4 for Exchange Server 2010 Service Pack 1


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

More Information

For more information about database availability groups, visit the following Microsoft website:

General information about database availability groups

For more information about the Get-MailboxDatabaseCopyStatus cmdlet, visit the following Microsoft website:

General information about the Get-MailboxDatabaseCopyStatus cmdlet

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