So I uninstalled Onedrive over 3 years ago when I first installed Windows 10 on this PC and today I saw all my desktop icons had little green ticks on them. I went online to see what that meant, because I've never seen it before and found out that it meant that Onedrive had "backed up" my desktop. Fuck knows where too, because I've never used Onedrive ever.
How do I stop this crap happening again, because I don't want that nonsense.