Symptoms

This issue occurs on a multiprocessor computer that is running Windows 8.1 or Windows Server 2012 R2. When you play a Miracast stream through a wireless network connection, a video glitch may occur.

Resolution

To resolve this issue, install update 2955164. For more information about how to obtain update 2955164, click the following article number to view the article in the Microsoft Knowledge Base:

2955164 Windows RT 8.1, Windows 8.1, and Windows Server 2012 R2 update rollup: May 2014

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 This issue occurs because of a multiple-CPU race condition when you send the video packets at the same time. 

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