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.
Allows HTML and JPEG Wallpaper