“I just went to my Fh2 achievements and clicked on one, allowed me to find it in the store. Because if you just search Forza Horizon 2, only 5 & 4 show up.”
"Had almost the same situation some time ago. If I remember correctly, you should do the following: 0. Delete all previous FH2 leftovers,
- Cancel auto installation after inserting the disc,
- While the disc is in console, go to MS Store,
- Initiate installation from the store,
- Eject disc when downloading starts,
- Wait the completion.
Thus, as the license holder, you can have FH2 fully from the net. Fortunately, you have the license info on some healthy part of disc — this is the reason it all works and you need this ‘area’ everytime to run the game itself, obviously."