By applying the optional update in this download package, you can choose between two profiles for mouse performance during video playback on a computer that is running Windows MultiPoint Server 2011. Apply this update only if the following conditions are true:
You have Windows MultiPoint Server 2011 installed.
The response time for mouse movement is slow when you run certain video formats.
This update is for computers that have local stations that use USB-based multifunction station hubs.
Important We do not recommend that you install this update if the local stations use direct video connections to graphics cards. We also do not recommend that you install this update on computers that have remote stations that connect from LAN-based thin clients that use the Remote Desktop Protocol.
By default, Windows MultiPoint Server is optimized for video playback across a wide set of media types and of hardware configurations. After you install this hotfix, you can select an alternative performance profile that disables some graphics processing-intensive tasks. Therefore, the response time for mouse movement improves on some hardware configurations during Internet video playback.
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
How to obtain this update
The update is available for download from the following Microsoft Download Center website: Download 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 the following operating system:
Windows MultiPoint Server 2011
You must restart the computer after you apply this update.
Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following article number to view the article in the Microsoft Knowledge Base:
322756 How to back up and restore the registry in Windows
To apply this update, edit the registry by using the following steps:
Click Start, click Run, type regedit, and then press Enter.
Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows MultiPoint Server\Shell.
Right-click EnableDesktopComposition, and then click Modify.
Perform one of the following actions:
Set Value data: to 1, and then click OK. (The SRCShell account has desktop composition turned on when this value is 1. This is the default value.)
Set Value data: to 0, and then click OK. (The SRCShell account has desktop composition turned off when this value is 0.)
Note The value that you choose depends on which choice works best for your system. You may need to test both values to determine the best choice for your system.
Close Registry Editor.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
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