Microsoft is celebrating Windows 50 Year Anniversary! Download the new wallpapers in 4K both stock and video for Windows 50 ...

Download the unreleased wallpapers from Sergey Kisselev's Behance in 1440p and 4K resolutions ... a rich history of introducing iconic backgrounds for its desktop operating system.

The photo you see above -- the default wallpaper for Windows XP -- is probably ... we should honor technology's most iconic image.