Microsoft has released a reliability update for Windows Server 2008 R2 x64 edition
This is a reliability update. Install this update to enable a set of performance and functionality updates for graphics, Media Foundation, and XPS components on Windows 7 and Windows Server 2008 R2 systems. After you install this item, you may have to restart your computer.Update for Windows Server 2008 R2 x64 Edition (KB2454826)