MW2 Dev Error 11642 – How to Fix

Since the game's launch, players have encountered countless connectivity issues and bugs in Call of Duty: Modern Warfare 2. While sometimes the game simply crashes after the initial loading screen, other times it's unplayable due to unresponsive shader optimization progress. This guide focuses on the 11642 Dev Error and potential fixes for this problem.

How to fix Dev Error 11642 in Modern Warfare 2

Players may face Dev Error 11642 in MW2 while trying to start a private match. If encountered, this error will prevent you from playing custom matches and will crash the game once you enter matchmaking. The following troubleshooting tips may fix Dev Error 11642 for you:

• Queue for a public match first: Prior to entering a private match, queue for a public match in MW2 Multiplayer. Several players have reported this fix to work most of the time. You don't even have to get into the match, simply queue in the Quick Play playlist and leave the lobby once a match is found. Alternatively, you can play one match just to make sure the fix works.
• Set unlimited FPS limit: In the Graphics settings for MW2, you'll find the Custom Frame Rate Limit option. Toggle this setting to Unlimited if you haven't already.
• Change Anti-Aliasing: If the above fixes haven't solved the problem for you yet, change the Anti-Aliasing setting to SMAA T2x.

Related: Best MW2 Chimera Loadout – Attachments & Class

These were some of the methods that should most likely fix the MW2 Dev Error 11642 on your PC. If you're still facing this issue, you can implement some other general fixes, such as scanning and repairing game files from the game client (Battle.net or Steam), updating your graphics driver, restarting your device, and reinstalling the game as a last resort.

Stay tuned to Pro Game Guides for more Call of Duty: Modern Warfare 2 & Warzone 2 content. In the meantime, head over to our article on Best Chimera Loadout and attachments in Warzone 2.