Forced to reinstall game

Hey all. when trying to play halo yesterday, the shortcut icon got whited-out and I am being forced to reinstall all of Halo MCC on PC (Microsoft Store). I think this happened once the update for Halo 3 ODST was released a couple of days ago. Either way, a little pissed off, to say the least. anyone else having this issue? fixes? suggestions? is it just me or is this something on 343’s end?

Happened to me too. Don’t know if it was because of the ODST update or because I removed the multiplayer modes from the game through the in game settings.