When Windows 11 first debuted in 2021, it did so with one of the biggest changes to the Windows desktop in over a decade ... which is the default Windows 11 wallpaper known as "Bloom." ...

You may not be able to extend a single wallpaper. Windows ... Win+I to open Windows Settings and go to Personalization > Background. It is the same place from where you set the desktop wallpaper.

Sometimes, when you initially upgrade to Windows 11/ ... All the desktop wallpapers are saved into C:\Windows\Web. The wallpapers are categorized into 4K, Screen, touch keyboard, and Wallpaper.