We have released two updates for MultiPoint Server 2012 which are available through Windows update.
Update Rollup 3 includes the following improvements:
•A resolution for the issue in which USB devices, including hubs and audio devices, were unavailable or in an error state at system startup.
•A resolution for the issue in which MultiPoint Manager might show "invalid namespace root\virtualization” when you enable virtual desktops.
•An improved speed of redirection for devices other than keyboards and mouse devices.
You can view more information about the update here.
Learn more: https://support.microsoft.com/en-us/kb/3075566
The second update improves performance degradations in Mstscax.dll in Windows MultiPoint Server 2012. Learn more here: https://support.microsoft.com/en-us/kb/3075566
Note: Questions and comments are welcome. For troubleshooting, post your issue as new question/discussion our Technet forum:aka.ms/multipoint-forum.
Missing a feature? Visit our UserVoice forum to post and vote for ideas:aka.ms/uservoice-wms
