Prevents users from adding or changing the background design of the desktop. By default users can use the Desktop Background page in the Personalization or Display Control Panel to add a background design (wallpaper) to their desktop. If you enable this setting none of the Desktop Background settings can be changed by the user. To specify wallpaper for a group use the “Desktop Wallpaper” setting. Note: You must also enable the “Desktop Wallpaper” setting to prevent users from changing the desktop wallpaper. Refer to KB article: Q327998 for more information. Also see the “Allow only bitmapped wallpaper” setting.