"ChangeKey is required for this operation" error message in Outlook for Mac 2011 in an Exchange Server 2010 environment

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Article ID: 2556352 - View products that this article applies to.
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SYMPTOMS

Assume that a Microsoft Outlook for Mac 2011 user moves an item, and then changes the category of the item in a Microsoft Exchange Server 2010 environment. When Exchange Server synchronizes items with the Outlook for Mac 2011 client, the user occasionally receives the following error message:
Error
Could not synchronize record: <Message Name> to Exchange server: <Exchange Server Name>
Details
ChangeKey is required for this operation.
Error code
-19946

CAUSE

This issue occurs because the MoveItem operation in the Microsoft Exchange Web service returns an incorrect ChangeKey property of a moved item when Exchange Server synchronizes items with Outlook for Mac 2011 clients.

RESOLUTION

To resolve this issue, install the following update rollup:
2582113 Description of Update Rollup 5 for Exchange Server 2010 Service Pack 1

STATUS

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 the MoveItem operation, visit the following Microsoft website:
General information about the MoveItem operation
For more information about the ChangeKey property, visit the following Microsoft website:
General information about the ChangeKey property

Properties

Article ID: 2556352 - Last Review: August 24, 2011 - Revision: 1.0
APPLIES TO
  • Microsoft Exchange Server 2010 Service Pack 1, when used with:
    • Microsoft Exchange Server 2010 Standard
    • Microsoft Exchange Server 2010 Enterprise
Keywords: 
kbqfe kbfix kbsurveynew kbexpertiseinter KB2556352

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