Outlook freezes and a high network load occurs when you apply retention policies to a mailbox in an Exchange Server 2010 environment

Article ID: 2800346 - View products that this article applies to.
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Symptoms

Consider the following scenario:
  • You have some mailboxes in a Microsoft Exchange Server 2010 environment that were moved from Exchange Server 2003 or Exchange Server 2007 to Exchange Server 2010.
  • Some users in the environment use Microsoft Outlook in cached mode to access the mailboxes.
  • You apply some retention policies to the mailboxes.
In this scenario, Outlook freezes and the size of the .ost file for each user begins to increase. Additionally, the network load in the organization is very heavy.

Note This issue does not occur if mailboxes are created by using Exchange 2010 servers.

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Cause

This issue occurs because the messaging records management (MRM) applies MRM policies to all items in mailbox folders. This causes the Outlook client to synchronize all items in the mailbox to a local .ost file.
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Resolution

To resolve this issue, install Exchange Server 2010 Service Pack 3 (SP3) on the Exchange Server 2010 servers. For more information about Exchange Server 2010 SP3, click the following article number to view the article in the Microsoft Knowledge Base: 
2808208
(http://support.microsoft.com/kb/2808208/ )
Description of Exchange Server 2010 Service Pack 3

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Workaround

To work around this issue, use Outlook in online mode, or use the Outlook Web App.
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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 MRM, go to the following Microsoft website:
General information about MRM
(http://technet.microsoft.com/en-us/library/bb123507(v=exchg.141).aspx)
For more information about retention tags and retention policies, go to the following Microsoft website:
General information about retention tags and retention policies
(http://technet.microsoft.com/en-us/library/dd297955(v=exchg.141).aspx)
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Properties

Article ID: 2800346 - Last Review: February 18, 2013 - Revision: 2.0
Applies to
  • Microsoft Exchange Server 2010 Enterprise
  • Microsoft Exchange Server 2010 Standard
Keywords: 
kbqfe kbfix kbsurveynew kbexpertiseinter KB2800346
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