Time to change Desktop Wallpaper

Hi All,

I have used InTune Device Configuration Profiles to set a desktop lock screen and desktop wallpaper. I have looked to change the wallpaper and thus updated the file that is picked up.

The lockscreen has changed and deployed fine but the desktop wallpaper has not changed - Any ideas please? The URL is the same for both images and all machines are running Windows 10 Enterprise.

Many Thanks