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Install this update to resolve some issues in Windows MultiPoint Server 2011 in which a PS/2 station’s audio is not connected to the correct audio device.


This update resolves issues on a computer that has a configured PS/2 station and that has multiple non-USB audio devices. When the issues occur, you may hear no sound from the audio device on the PS/2 station, or the audio from the session is sent to the audio device on another station. This update is necessary in the following scenarios:

  • The audio devices of a PS/2 station are connected to the audio ports on the chassis of a computer.

  • A computer has multiple non-USB audio devices that are physical or virtual.


To resolve this problem, install the update rollup that is described in the following Microsoft Knowledge Base article:

2555129 Update Rollup 1 for Windows MultiPoint Server 2011

Update information

How to obtain this update

The update is available for download from the following Microsoft Download Center website:
DownloadDownload information for the update package
For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base:

119591 How to obtain Microsoft support files from online services
Microsoft scanned this file for viruses. Microsoft used the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to the file.


To apply this update, you must be running Windows MultiPoint Server 2011.

Restart requirement

You must restart the computer after you apply this update.

Update replacement information

This update replaces the following updates:

2530453 Update for Microsoft Windows MultiPoint Server 2011: April 2011

2542222 Update for Windows MultiPoint Server 2011 to resolve an issue in which MultiPoint Manager may not display new station information


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

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