Disable login screen background image in Windows 11
Create registry key
Location: Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\System Type: DWORD 32 Name: DisableLogonBackgroundImage Value: 1
windows:misc:disable_login_screen_background
Create registry key
Location: Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\System Type: DWORD 32 Name: DisableLogonBackgroundImage Value: 1