Dev Error 5820 only occurs when players in MW3 attempt to start a Private Match. The error occurs right after pressing “Start Match” and kicks the entire lobby ...

To fix the Dev Error 11557 in Modern Warfare 2 and Warzone 2.0, run the game as an admin and disable overclocking. Other than that, follow these suggestions: NVIDIA ...

Once a fix does come in, though, as any CoD veteran will tell you, errors have a way of sticking around. So, you can also try restarting your game, console, or PC. It’s a tried and true technique and ...