Here's a nice article on someone else setting it up: I have also tried Software\Microsoft\Windows\CurrentVersion\Policies\System\Wallpaper Hard drive (C:\Windows\Web\Wallpaper\) and set the registry entry to the new wallpaper in that location: We have some complex requirements for Desktop Wallpaper, based on dates it must be certain wallpaper for certain groups of users, to accomplish these requirements I've used a Group Policy and Preferences within to copy files from a network share to the local key or directly referencing network location wallpaper issues, it's none of those and our Windows 7 machines have SP1, so the hotfix mentioned in a lot of these threads is not applicable to this Note: that this is NOT the blank wallpaper, or the transcoded wallpaper, or the missing I've been referred here, however I suspect this needs Microsoft to issue a hotfix for Windows 7 (any probably other OS versions).