“Client Side Rendering Print Provider" registry key growth on a Win 2008 R2-based RD Session Host server

A new KB article is now available regarding the issue with the fast growth of the registry key Client Side Rendering Print Provider.

“…Consider the following scenario:

• You install the Remote Desktop Services (RDS) role on a Windows Server 2008 R2-based computer.
• The server uses the client-side rendering feature for print jobs.
• Clients from different locations connect to the RDS server, and they use different printers based on their location.

In this scenario, the HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Print\Providers\Client Side Rendering Print Provider registry key can quickly grow to 1 gigabyte (GB) or larger. Additionally, you may experience performance issues on the RDS server, such as slow logon times or high CPU usage by the print spooler. Additionally, when you try to map a printer on the RDS server, you receive an error message that resembles the following:

Error 0x00000006…”

Source and download: http://support.microsoft.com/kb/2778831