You do not need to delete or uninstall the game. All you need to do is go to settings > systems > storage > Whichever drive you have the game downloaded > view contents > go to infinite warfare > press the start button > manage game > on the left you will see your manage options, thumb down to the saved data > select reserved space > select clear reserved space > go to available updates or navigate to the game through the store and update there. This should clear up the issue WITHOUT uninstalling the game/having to redownlod several times in the 'hope' that it works correctly (saved me a lot of potentially wasted time/possible game data lost). As I am reading a lot of these comments, it seems that this will not work for everyone. But it surely worked for me so give it a try, good luck to you all!