When you disconnect and then reconnect to a session on a Windows MultiPoint Server 2011 station, some functionality may stop working. For example, private USB storage, web limiting, or station blocking may stop working.
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
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about how to manage user files, visit the following Microsoft TechNet website: