COD Modern Warfare 2 Dev Error 11642 [FIXED]

We've come up with the 11 most effective methods you can use to solve Call of Duty MW2 Dev Error 11642 on your PC or console.

If you’ve been playing Call Of Duty Modern Warfare 2 since the beginning, you’ll know how it had a rocky launch. The game initially had several performance issues and immersion-breaking bugs. While most of the issues were addressed and solved by the dev team, some errors still pop up every now and then. Call of Duty MW2 Dev Error 11642 is precisely one of those errors that can ruin your gaming session solo or with friends.

We’ll check out what this error exactly is and explore some effective methods you can use to fix it.

In case you’re facing frequency crashing in Call of Duty Modern Warfare 2, you can check out our guide on Modern Warfare 2 crashing.

Key Takeaways

  • Call of Duty MW2 Dev Error 11642 is a widespread error plaguing PC and console players worldwide.
  • Dev Error usually pops up when players try to launch the private lobby with either bots or their friends.
  • We’ve listed several ways you can try and fix this error yourself and have a smooth experience in the MW2 private server.
  • This guide includes methods for both PC and console players.

What is Call of Duty MW2 Dev Error 11642

Players across different platforms have reported Dev Error 11642 in Call of Duty MW2. You’ll encounter this error usually when starting a “Private Match Lobby.” As soon as you start a private game, they will go on a loading loop and kick players back to the main menu.

I’ve personally seen this error pop up quite frequently during play sessions with my squad. While Infinity Ward hasn’t come up with any official bug fix, there are some ways you can help fix Dev Error 11642 yourself. Let’s check them out.

Ways to Fix Dev Error Code 11642 in Call of Duty MW2

Queue In an Online Match

One of the quickest ways to solve MW2 error code 11642 is by queueing for a public match. For me, this method has worked like a charm.

All you have to do is get your friends that you want to start a private match within the lobby and queue for an online match. As soon as the matchmaking starts, cancel it and return to the main lobby. Once you’re in the main lobby, try creating a private lobby again. There’s a good chance you won’t be seeing that pesky error again. 

Change Your FPS Setting

Now I don’t know how changing FPS affects this error, but apparently, it’s a fix that’s working for many. Here’s how you can apply this fix:

  1. Click on the setting (gear) icon on the top-right corner of the screen
  2. Once the drop-down menu opens, click on the “Graphics Settings” option. 
Change FPS for Error Code 11642
Change FPS to Unlimited
    1. Now that you’re in the settings menu change the “Custom Frame Rate Limit” to Unlimited.

Tip: If this option was already unlimited and you’re still facing error code 11642, try changing it to your maximum refresh rate, i.e., 60, 120, 144, 165, etc.

This should hopefully resolve the error code and let you enjoy your private matches with bots or friends in peace. If you’re still having issues, don’t worry, there are a lot of fixes where this came from.

Switch Your Display Mode

Players have reported that switching your in-game display modes around have also fixed dev error 11642 in Modern Warfare 2. 

While using exclusive fullscreen is the go-to for most games since it gets the most performance out of games, try switching to “borderless Fullscreen” mode. The borderless fullscreen implementation in Call of Duty Modern Warfare 2 is impressive. Players have noticed little to no differences in performance with the added ease of switching in and out of the game when needed. 

Here’s how you can try this fix: 

  1. Go to the bottom-right corner of the screen and click the “Settings” icon. 
  2. Select “Graphics Settings” from the drop-down menu. 
Change Display Mode for Error Code 11642
Switch Display Mode to Fullscreen Borderless
  1. You’ll see the “Display Mode” setting on the top. Just select the “Fullscreen Borderless” option and hit apply.

Once you’ve successfully changed your display mode, try launching private lobby and now and see if the error is fixed. 

Change the Allocated Texture Cache Size

This fix is geared explicitly toward console gamers facing dev error 11642 in Modern Warfare 2 on their Xbox Series X, Series S, PS5, or PS4

The allocated Texture Cache Size is located inside the On-Demand Texture Streaming setting. This setting controls how much on-demand texture cache will be stored on your local console drive. Altering it can help you get rid of the error code. Here’s how you can do it:

  1.  Go to the settings menu by clicking on the “Gear” icon in the top-right corner of the screen.
  2. In the drop-down menu, select “Graphics Settings.”
Change Allocated Texture to solve error 11642
Change The Allocated Size
  1. Go to the “Details & Textures” sub-menu and expand “On-Demand Texture Streaming Setting.”
  2. Once it expands, go to the “Allocated Texture Cache Size” option and set it to either “Medium” or “Large.” Click apply and close settings.

Once you do this, try to re-launch the private match and see if the error shows up again. If it’s resolved, that’s great, if not, we’re not done with fixes just yet, so don’t worry. 

Turn Off On-Demand Texture Streaming

If the previous fix didn’t work for you, chances are this one will. The previous fix was meant to increase the allocated size for the texture cache on your storage. If, after changing that, you’re still getting Dev Error 11642 in Call of Duty MW2, you should disable Texture Streaming altogether.

Call of Duty is notorious for huge game install sizes. Hence On-Demand Texture Streaming was introduced back in COD Vanguard. It’s a way for players to reduce the game’s install size by making higher-quality textures optional (sort of). So, instead of downloading a hefty texture pack, this setting lets you download high-quality textures while you play.

Hence, it could cause your private lobby to crash and give you the error code. Here’s how you can disable it:

  1. Enter the settings menu by clicking on the gear icon in the top-right corner of the screen.
  2. Once the drop-down menu opens, click on the “Graphics” settings.
Disable On-Demand Texture Streaming For Error Code 11642
Turn Off On-Demand Texture Streaming
  1. Under the “Details & Textures” sub-menu, turn off the “On-Demand Texture Streaming” option. 

After switching it off, try to start a private match again. If everything went well, then this setting was the problem. If you’re still getting the error, I suggest turning texture streaming back on and trying other fixes. 

Restarting Shaders Optimization

Shaders and their optimization play a huge role in Call of Duty MW2 performance. Restarting shader optimization can resolve most of the errors and glitches you see in the game. 

In case you’ve updated your GPU drivers, changed the graphics settings, or installed the latest MW2 update, it’s crucial that you let shaders optimize first and not cancel the process. In case it’s been a while since you last optimized shader data, do it manually. Here’s how to restart shader optimization:

  1. Click on the “Settings” icon in the top-right corner of the screen. 
  2. In the settings drop-down menu, click on “Graphics Settings.” 
Restart Shaders Optimization
Restart Shaders Optimization
  1. In the display settings, scroll down until you find the “Restart Shaders Optimization” option. Select it, and you’ll need to restart the game to start the process. 

Once the shaders are optimized 100%, try running the private lobby now and see if the error is resolved. 

Turn Off VPN

Now that we’ve finally checked out every possible fix you can apply in-game, let’s try some fixes outside the game. The first major reason that you might be getting Dev Error 11642 in Call of Duty MW2 is by using a VPN. 

VPN tweaks your internet connection‘s normal flow, which prevents the game from sending a proper request to the backend servers. Hence, it’s best to turn off any VPN service you might have running or configure in the background. Here’s how you can remove any VPN configurations in Windows:

  1. Open the settings on your Windows PC by going to the start menu and clicking on the “Settings” icon. 
Open VPN settings to disable it
Go to VPN Settings
  1. Go to the “Network & Internet” settings in the sidebar and click on VPN settings.
Remove VPN Connection in Settings
Remove The VPN Configuration
  1. Once in the VPN Settings, check for any VPN configurations you have. Click on the drop-down arrow beside them and select remove. 

This will remove any VPN configurations in your Windows PC. Simply restart the game and check if the error was fixed or not. 

Verify Game Files

This is one of the oldest fixes in the book. Game files can get corrupted or even accidentally deleted over time, leading to errors like 11642. To resolve such issues, you can verify the integrity of your game files. 

Verifying game files will essentially check Call of Duty M2 for any missing or damaged files. Once found, the client will replace those files with new ones from the server. You can do this quite easily on both Battle.Net and Steam. Here’s how:

Steam Method

  1. If you’ve got the game on steam, locate it in your Library, Right-Click on it, and open Properties.
Verify Local Files Steam
Verify Game Files on Steam
  1. Once inside the Properties Window, go to the Local Files Tab and click “Verify Integrity of Game Files.”

Once you start verifying local files, the process itself will take some minutes to complete depending on your storage device speed. Once it completes, steam will automatically replace any missing or damaged files. 

Battle.Net Method

  1. If you have the game on, open it up and go to the Call of Duty Modern Warfare 2 section.
Scan MW2 Game Files
Scan and Repair Game Files
  1. Once in the MW2 tab, click on the Gear Icon next to the Play Button and select Scan and Repair Option.

Similar to steam’s verifying files, this process will take several minutes, depending on your storage speed. Once done, will replace your damaged or missing files, hopefully resolving your error. 

Disable Antivirus Software

Antiviruses have always been the number 1 enemy of games crashing or giving you the white screen.

Their active shields either prevent the game files from properly communicating with each other or connecting to the internet. In several cases, the antivirus software often deletes a file or two under suspicion of being infected. 

Try temporarily disabling its shields to ensure your antivirus isn’t causing the Call of Duty MW2 Dev Error 11642. Once the shields are down, try relaunching the game and fire up the private lobby. If you aren’t getting the error, ladies, and gents, we’ve found our culprit. 

If the antivirus is the problem, go into the settings and whitelist the local install folder for MW2. This will prevent your AV from poking around in that folder, giving you an error-free COD experience. 

Update Graphics Card Drivers

In some cases, the GPU driver either becomes outdated or corrupted. This creates problems like frequent crashes, errors, and stuttering in games. 

If you’ve started facing error 11642 recently, it’s plausible that your GPU driver needs to be updated. I recommend doing a clean install by removing the old driver through utilities like Display Driver Uninstaller (DDU). 

Once you get rid of the older driver, either download Nvidia Geforce Experience or AMD Radeon Software. These first-party utilities will help you install the latest GPU drivers available at the time. 

You can further optimize your gaming performance by tweaking your GPU settings. Check out our guide on Nvidia’s best settings and AMD’s best settings to get more performance out of your graphics cards. 

Reinstall the Game

This final fix is more of a last resort, considering the gigantic download size of Call of Duty MW2. However, if you’ve exhausted every fix mentioned above and you still are getting that pesky dev error 11642 in Call of Duty MW2, it’s time to uninstall. 

Depending on where you have the game, you can go to Steam or Once there, simply locate the game and uninstall it. 

After the game’s uninstalled, download it back, as the game client will bring in fresh new files that won’t be corrupted. Once installation completes, there’s a high chance you won’t see that error code ever again. 


We’ve finally listed every possible fix there was to solving Call of Duty MW2 Dev Error 11642. Hopefully, our fixes helped resolve your issue, and you’re having a blast in the private matches. If you’re still getting the issue, I suggest contacting Call of Duty support directly or waiting for a patch. If you have any questions regarding the fixes, feel free to ask in the comment section below. Good luck going toe to toe with your friends in the private matches, soldier. 

Done reading and want more helpful content to enhance your Call of Duty MW2 experience? Check out our performance optimization guide on Call of Duty Modern Warfare and try these best settings to get the most FPS out of your PC.
Was this article helpful?

Thanks! Do share your feedback with us. ⚡

How could we improve this post? Please Help us. ✍

Ayyoun Ali

Ayyoun is a passionate technology and gaming enthusiast who loves to help others experience the same enthusiasm through his content. With over 4 years of professional writing experience and 15 years of gaming experience, he's always in search of the next best thing people want to know about. He's mostly into the horror genre and his favorite games include Silent Hill, Resident Evil, and Hunt Showdown...the list goes on friends. Better save your stash of coffee cuz he might gulp it down before you could say "Expelliarmus".

Related Articles