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:
Download information for the update packageFor 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
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Prerequisites
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