You need to rely on either Internet Explorer or Firefox to do this. Keep in mind that Google Chrome and Microsoft Edge don’t offer this option. You can use the built-in File Explorer utility to set any image on your computer or external storage as the desktop background. RELATED: You Don't Need a Product Key to Install and Use Windows 10 Change the Windows 10 Desktop Wallpaper Using File Explorer (You’ll find it at Settings > Update & Security > Activation.) You can upgrade to a genuine, activated version right from the Activation screen in Windows 10’s Settings app. That will get rid of the “Activate Windows 10” watermark and give you access to the normal Personalization options. Of course, we recommend paying for a Windows 10 license if you use it. You can use alternative methods (such as those described below) to change your wallpaper on an unactivated Windows 10 copy. Luckily, Settings isn’t the only way to change the Windows 10 desktop background. The entire Personalization menu in Settings is disabled, which means that you can’t change various appearance options for your PC. Microsoft lets you download and use Windows 10 without activating it, but this comes with some restrictions. What Happens When You Don’t Activate Windows 10
