Minor problems at various levels of gameplay have long been an unpleasant routine for Diablo 4 players. This time, the problem has affected those who play through Xbox Game Pass. When launching the game, many are faced with an error message stating: "Diablo 4 Was Unable To Open a Critical File." This error does not allow them to launch and enjoy the game. The reason for this error is a problem with updates that have been plaguing players in various Blizzard games for many years. Fortunately, this error is not as bad as it seems, and we are here to help you fix it.