Windows/BackgroundWallpaper
2021 - Win10 - Wallpaper in registry, regedit
Computer\HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Wallpapers
- remove BackgroundHistoryPathX to get back windows wallpaper as option.
Images in c:\Windows\Web\4K\Wallpaper\Windows\ , c:\Windows\Web\Wallpaper\Windows\img0.jpg