Here Fallow simple workaround to clear the downloaded images and reset the settings to get the Windows Spotlight feature working again.
If windows spotlight information, not showing lock screen won’t change images on windows 10. Resetting Windows Spotlight settings & preferences most probably fix the problem for you.
If you are facing this issue, Windows Spotlight is not working, lock screen won’t change. There may be plenty of reasons why your Windows 10 machine is not fetching new wallpaper from Bing.