You cannot perform a cross-premises search in a mailbox in an Exchange Server 2010 hybrid environment
When you perform a cross-premises search in a mailbox in a Microsoft Exchange Server 2010 hybrid environment, the search operation fails intermittently.
This issue occurs because the mailbox encounters a storage transient exception.
To resolve this issue, install the following update rollup:
Description of Update Rollup 6 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.
Article ID: 2783776 - Last Review: 02/12/2013 16:52:00 - Revision: 1.0
Microsoft Exchange Server 2010 Service Pack 2
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