Save as SetLockScreen.reg and deploy via login script or RMM:
Windows Registry Editor Version 5.00 [HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\Personalization] "LockScreenImage"="C:\Corp\wallpaper.jpg" "NoChangingLockScreen"=dword:00000001
Here are the three critical policies you need to master: Location: Computer Configuration\Administrative Templates\Control Panel\Personalization State: Enabled Options: Specify the local path or UNC path to the image (e.g., \\DC01\Wallpapers\win11_lock.jpg )
