How to Fix Dev Error 11557 in Modern Warfare 2 and Warzone 2.0
Modern Warfare 2 and Warzone 2.0 players are facing Dev Error 11557 since the latest update and the issue is more prevalent on consoles than on PC. If you are facing the issue, there is an easy fix that works for most users and it involves tweaking your in-game settings. Before you try any fixes make sure that your console firmware or operating system has been updated and you should also perform any pending game updates if you have not. Here’s how you can fix dev error 11557 in Warzone 2.0 and Modern Warfare 2.
Dev Error 11577 in Modern Warfare 2 and Warzone 2: How to fix
Launch the game
Go to Settings > Graphics
Click on more options and find On Demand Texture Streaming
Set the cache size to medium or small
If this does not fix your issue, you should check your system for updates.
Update Your Xbox
Make sure your console is connected to the Internet, then press the Xbox button to open the guide and select Profile & system (your account icon) > Settings.
Select System > Updates & downloads > Update console.
If you see a grayed-out No console update available instead of Update console, it's because you're already up to date.
Update your PlayStation
Press the PS button on your wireless controller to go to the control center and select Downloads/Uploads.
You should see any pending updates
If your system update fails, highlight the system software update and select View Error Info, then Try Again.
Go to Start > Settings > WIndows Update and you should see all pending Windows updates. Click on Update Now to immediately update your operating system.
If you are already on the latest version of your operating system, try reinstalling Modern Warfare 2 / Warzone 2.0 to see if it helps. If you are still facing issues consider reaching out to Activision Support.