You’re scrolling through your "Add or Remove Programs" list, trying to free up space, and you see it: (or sometimes, Microsoft Windows Desktop Runtime).
Three reasons, and they’re actually rational: is windows desktop runtime safe
If you right-click the file and check "Properties," it should have a valid digital signature from Microsoft. Can I Uninstall It? Technically, yes—but you shouldn’t. You’re scrolling through your "Add or Remove Programs"