Article ID: 2426952 - Last Review: April 6, 2011 - Revision: 2.0

You cannot remove a mailbox database copy from a database on an Exchange Server 2010 server

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SYMPTOMS

Consider the following scenario:
  • You have a server that has the Microsoft Exchange Server 2010 Mailbox server role installed.
  • You install Exchange Server 2010 Service Pack 1 (SP1) on the server.
  • You run the Remove-MailboxDatabaseCopy cmdlet to remove a mailbox database copy from a database on the server.
In this scenario, you receive the following warning message:

WARNING: An unexpected error has occurred and a Watson dump is being generated: Registry key has subkeys and recursive removes are not supported by this method.
Registry key has subkeys and recursive removes are not supported by this method.
+ CategoryInfo : NotSpecified: (:) [Remove-MailboxDatabaseCopy], InvalidOperationException
+ FullyQualifiedErrorId : System.InvalidOperationException,Microsoft.Exchange.Management.SystemConfigurationTasks.RemoveMailboxDatabaseCopy

Notes
  • Despite the warning message, the mailbox database copy is removed successfully.
  • You can run the Get-MailboxDatabaseCopyStatus cmdlet to view the status information about the mailbox database.
  • After this issue occurs, you receive the same warning message if you run the Add-MailboxDatabaseCopy cmdlet to add the same mailbox database copy back to the database on the server.
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CAUSE

This issue occurs because the following registry key is not cleared when you install Exchange Server 2010 SP1 on the server:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ExchangeServer\v14\Replay\State\<database GUID>\DumpsterInfo
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RESOLUTION

To resolve this issue, install the following update rollup:
2529939  (http://support.microsoft.com/kb/2529939/ ) Description of Update Rollup 3 for Exchange Server 2010 Service Pack 1
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WORKAROUND

To work around this issue, manually delete the following registry key on the server:

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ExchangeServer\v14\Replay\State\<database GUID>\DumpsterInfo
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STATUS

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

For more information about the Remove-MailboxDatabaseCopy cmdlet, visit the following Microsoft website:
General information about the Remove-MailboxDatabaseCopy cmdlet (http://technet.microsoft.com/en-us/library/dd335119.aspx)
For more information about the Add-MailboxDatabaseCopy cmdlet, visit the following Microsoft website:
General information about the Add-MailboxDatabaseCopy cmdlet (http://technet.microsoft.com/en-us/library/dd298105.aspx)
For more information about the Get-MailboxDatabaseCopyStatus cmdlet, visit the following Microsoft website:
General information about the Get-MailboxDatabaseCopyStatus cmdlet (http://technet.microsoft.com/en-us/library/dd298044.aspx)
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APPLIES TO
  • Microsoft Exchange Server 2010 Service Pack 1, when used with:
    • Microsoft Exchange Server 2010 Enterprise
    • Microsoft Exchange Server 2010 Standard
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Keywords: 
kbqfe kbfix kbsurveynew kbexpertiseinter kbhotfixrollup KB2426952
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