How To Fix the Dev Error 6661 In Call Of Duty? 5 Methods

Call of Duty Modern Warfare 3 is one of the most popular first person shooter games in the world. The game includes a number of features that allow players to customize their gaming experience. One feature that is often customized is the player’s error code. Error 6661 is a common error code in Call of Duty: Modern Warfare 3 that occurs when a player attempts to join a game in progress or when they are attempting to create a new profile.

5 Methods On How To Fix the Dev Error 6661 In Call Of Duty

If you are experiencing an issue with the game Call of Duty, such as the COD Dev Error 6661, there are a few things that you can do to try and fix it. Here are five methods on how to fix the dev error 6661 In Call Of Duty.

Method 1. Close the game and restart your computer

It’s happened to all of us. We’re playing our favorite game, and we get so into it that we lose track of time. Suddenly, we realize that hours have passed and we’re starving or exhausted. Unfortunately, if you’re not careful, you could lose your progress in the game as well. Here are a few tips for avoiding that dreaded scenario.

First, always make sure you save your game before quitting. Most games have an auto save feature, but it’s always a good idea to manually save as well. Second, if you’re going to be away from your computer for an extended period of time, either pause the game or close it altogether. Finally, don’t be afraid to restart your computer if you find yourself getting stuck in a particularly challenging section of the game. It may seem like a hassle, but it’s better than losing all your progress.

Method 2. Open the game and check for updates

When you open the game Call of Duty again, you will be prompted to check for updates. It is best to do this, as it ensures that you have the latest version of the game and that any glitches or problems have been fixed. The update process usually takes only a few minutes, and then you can start playing again. Make sure your computer is connected to the internet while you’re doing the update so that it can download quickly and smoothly.

Your computer may restart several times during the update process and it may not appear to be working properly. Don’t worry, this is normal. Just wait until the update process is finished, then try using your computer again.

Method 3. Delete game files and reinstall the Call of Duty game

Call of Duty is one of the most popular video games of all time. The game has been around for over a decade and has had many sequels. However, there may be a reason to delete the Call of Duty game from your computer and reinstall it. Some players have found that deleting and reinstalling the game solves many issues they are experiencing with the game. This includes problems with multiplayer mode, lag, graphics, and more. Deleting and reinstalling the game can also help to clear up storage space on your computer.

If you are having any problems with Call of Duty, be sure to try deleting and reinstalling the game. You may be surprised at how well this simple solution can work!

Method 4. Change Your Graphics settings

If you’re experiencing the Dev Error 6661 in Call of Duty, don’t worry you can fix it! All you need to do is change your graphics settings. First, open up your graphics options and set your rendering resolution to “low.” This will help to fix the error. Next, set your anti-aliasing setting to “off.” This will help to improve performance and fix the error. Finally, set your texture quality to “low.” This will also help to improve performance and fix the error. Once you’ve changed these settings, try running Call of Duty again. You should no longer experience Dev Error 6661.

Method 5. Update your drivers

If you’re getting the Dev Error 6661 when playing Call of Duty, don’t worry! You can fix it by updating your drivers. Just head to your device manufacturer’s website and download the latest drivers for your hardware. After you’ve installed them, restart your computer and try playing Call of Duty again. You should no longer see the dev error 6661 message.

Why do I keep getting a dev error on Call of Duty?

There could be a few reasons why you’re getting a dev error on Call of Duty. One possibility is that your game files are corrupted and need to be repaired. Another reason could be that you don’t have the latest updates for the game. Make sure your game is up to date, and if that doesn’t solve the issue, try repairing the game files.

How do I fix the Dev error on Call of Duty Modern Warfare?

There are a few ways to fix the Dev error on Call of Duty Modern Warfare. One way is to delete the game files and reinstall them. Another way is to clear your cache.

  • To do this, right-click on the game in your games list and select “Properties.”  
  • Under the “General” tab, you’ll see a button that says “Delete Local Content.”  
  • Click this button to delete all of the files from your computer.


In conclusion, there are several ways by Not Responding team that you can try to fix Dev Error 6661 in Call of Duty. The first thing you should do is make sure that your system meets the game’s minimum requirements. If it does not, then you can try upgrading your system. You can also try deleting the game’s cache files and reinstalling them. If none of these methods work, then you may need to contact support for further assistance.

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