TIP: This post will help you if you can’t set different wallpaper on a dual monitor setup. Set different Wallpapers on Dual Monitors in Windows 10. If you are using Windows 10, do the following: ...

Right-click the image and select the monitor you want the wallpaper to show. After completing the steps, you can repeat step No. 5, 6, 7 to set a different wallpaper on each of your monitors. More ...