Next, select and click on a theme you want to apply ... and click on Set as desktop background. To let Windows 10 change your wallpaper automatically, select Slideshow from the drop-down menu ...

All you need to do is go this page ... you find these websites as a great resource to download free background pictures for your desktop in Windows 10. Where can I get free desktop wallpapers?

As first spotted by @PhantomOfEarth, one of the options available in the Copilot for Photos app is the ability to set your favorite photo as desktop wallpaper. So, instead of following the ...