On a Windows Server 2008 R2 RDSH the following warning may be seen in the event log and graphics acceleration does not appear to work:
Important: The following solution only applies to version 6.1.7601.22137. Do not apply the changes if the version mentioned in the error above is different. In this case Technical Support should be contacted and a new case raised for assistance.
Add the following key to the registry under HKEY_LOCAL_MACHINE\SOFTWARE\Wow6432node\Provision Networks\Terminal Server\rdpdd.dll
OESendDrawGdiplusOrder - REG_DWORD
Hexadecimal - fffd4a90
Restart the server and the event log warning will be replaced with the following event if the key has been correctly added:
Technical Support does not provide support for problems that arise from improper modification of the