[Liru]

So far, just for Windows, I've had ads:

  1. On the lockscreen
  2. In my start menu's tilebar
  3. In my start menu's search results
  4. In my start menu's program list
  5. In Explorer, for OneDrive
  6. In Edge, on a "blank" page
  7. In toast notifications

And that's just what I remember offhand; I'm certain there's even more.