Ignores Windows Logon Background. This policy setting may be used to make Windows give preference to a custom logon background. ...

Ignores Windows Logon Background.

This policy setting may be used to make Windows give preference to a custom logon background. 

If you enable this policy setting, the logon screen will always attempt to load a custom background instead of the Windows-branded logon background. 

If you disable or do not configure this policy setting, Windows will use the default Windows logon background or custom background.