[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\System] "DisableLogonBackgroundImage"=dword:00000000
This writes a LockScreenImage value to the registry. Windows 11 loads this image during boot and when the user locks the workstation (Win+L). windows 11 lock screen wallpaper gpo
The burning question for system administrators is: How do I force a specific lock screen wallpaper across hundreds or thousands of Windows 11 machines without touching each one? windows 11 lock screen wallpaper gpo