Symptoms
Consider the following scenario:
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You install update rollup 2928424 on a Windows RT 8.1, Windows 8.1, or Windows Server 2012 R2-based computer.
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You configure Merge mode under the User Group Policy loopback processing mode in the following Group Policy path:
Computer Configuration\Administrative Templates\System\Group Policy
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Multiple users try to log on to this computer.
In this scenario, policies that require synchronous application cannot be applied correctly. For example, a folder redirection policy is removed, and the files are instead redirected locally.
Resolution
To resolve this issue, install update rollup 2975719. For more information about how to obtain this update rollup package, click the following article number to view the article in the Microsoft Knowledge Base:
2975719 August 2014 update rollup for Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2
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 software update terminology, click the following article number to view the article in the Microsoft Knowledge Base:
824684 Description of the standard terminology that is used to describe Microsoft software updates
