The Do not allow Windows Media Center to run machine setting should be configured correctly. Specifies whether Windows Media Center can run. If you enable this setting, Windows Media Center will not run. If you disable or do not configure this setting, Windows Media Center can be run. Fix: (1) GPO: Computer Configuration\Administrative Templates\Windows Components\Windows Media Center\Do not allow Windows Media Center to run (2) KEY: HKLM\Software\Policies\Microsoft\WindowsMediaCenter\MediaCenter