Enables Active Desktop and prevents users from disabling it. This setting prevents users from trying to enable or disable Active Desktop while a policy controls it. If you disable this setting or do not configure it Active Desktop is disabled by default but users can enable it. Note: If both the “Enable Active Desktop” setting and the “Disable Active Desktop” setting are enabled the “Disable Active Desktop” setting is ignored. If the “Turn on Classic Shell” setting ( in User Configuration -> Administrative Templates -> Windows Components -> Windows Explorer) is enabled Active Desktop is disabled and both of these policies are ignored.