How to change wallpaper in Windows11

First, navigate to the settings application.

Select: Personalisation, then: Background.

Next to "Choose a photo", Select Browse Photos.

Select the image you want for your wallpaper from the File Explorer.

Other options in the Personalisation > Background page allow you to tweak your wallpaper further and barring any organizational policy, your wallpaper will remain as is until it is changed again.

Don't forget to Rate Five Stars!