I had a similar problem at the very beginning, but with all the trouble at lunch of play anywhere, I just figured it was their problem to fix. As it turns out it actually hadn't finished downloading yet, just the progress had disappeared. If you check the properties of the Microsoft store download folder you'll see it has 2 different sizes. One is actual size on disk and one is allocated empty space. Check your downloads in the Microsoft store maybe it'll show as incomplete. Otherwise just wait for it to finish.