The Do not allow desktop composition machine setting should be configured correctly. This policy setting controls how some graphics are rendered and facilitates other features, including Flip, Flip3D, and Taskbar Thumbnails. If you enable this setting, the desktop compositor visual experience will be turned off. If you disable or do not configure this policy setting, desktop composition will be turned on, if the required hardware is in place. Fix: (1) GPO: Computer Configuration\Administrative Templates\Windows Components\Desktop Window Manager\Do not allow desktop composition (2) KEY: HKLM\SOFTWARE\Policies\Microsoft\Windows\DWM\DisallowComposition