Call of Duty: Modern Warfare “dev error 6345” explained
Though triple-A games may look more injury-proof than indie titles from outside, even titans can shiver. Call of Duty: Modern Warfare players aren’t strangers to occasional server problems that come and go whenever a double XP weekend kicks off, but a fundamental error that prevents you from even launching the game can be scary.
Dev error 6345 usually appears after your game gets shut down by itself while opening and forces you to go back to the Battle.