Problem with FH2 day one disc

“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,

  1. Cancel auto installation after inserting the disc,
  2. While the disc is in console, go to MS Store,
  3. Initiate installation from the store,
  4. Eject disc when downloading starts,
  5. 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."