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Whenever we play our favourite game or other things we love, there is something that disturbs us and wastes our time. Here, we have brought a solution for dev error 6034 on Xbox One, PC, and PS4 to save time and end obstacles in your enjoyment.

We are recently writing about the most famous game among gamers, and users need help with problems.

Call of duty is popular among gamers but is also famous for its mistakes and errors.

Like other games, call of duty has errors and bugs; one of them is dev error 6034, and we have solutions for it. A dev error 6034 happens when the player tries to join friends online or during multiple maps in Call of Duty. Most gamers are worried about this error, but there is no need to worry; it is all about corrupted and unreadable game data and makes you unable to connect to your game server. It would be best if you stayed tuned and connected with us to fix this error and reconnect your game server.

Why does Error 6034 happen?

Dev error 6034 happens for different reasons and various systematic mistakes.

Here we provide different statements based on players’ experience, and perhaps one of them caused an error in your system. We like to inform you that most players of Call of Duty in the world did not observe this error a single time in modern warfare.

Mainly many players face this frequently, and others rarely; still, we have mentioned a possible reason for it.

  1. Your computer may suffer from an issue that can cause the game client to misbehave.
  2. Dev error 6034 may occur by chance and not for specific reasons.
  3. If Call Of Duty Warfare or Warzone game files are corrupt, then most chances are dev Error 6034.
  4. Often dev error 6034 occurs due to third-party app interference in your system.
  5. Interestingly your system update may cause the error.
  6. Using outdated or incompatible graphics card drivers could cause issues while playing. It is essential to ensure that you always keep your GPU drivers current.

The above have mentioned possible errors may occur, and you might face these reasons as mentioned earlier. Still, a solution or fixing of the error would be almost identical so let’s jump to fixing dev error 6032.

Method 1: Restart game 

Restarting your game is the easiest way to fix dev error 6034, and we know many players have tried this before reading our article.

We recommend it because it is a helpful way to fix COD errors. Despite that, you are facing error. Read the next method.

Method 2: Clear Reserved Space

Mainly reserved space is used to store patches and update files.

If your system reserved space in full and your game does not get access, it may show dev error 6034.

You have to clear reserved space to fix this error, and here are ways to fix it.

  • To open Game Menu on Xbox, select Modern Warfare and click the Options button.
  • In these options, click manage game and add-on.
  • Afterward, go to the Saved Data menu and click Reserved space.
  • The Next step is to click clear, reserved space, and confirm it.
  • After clearing the reserved space, you have to restart your system to check if the error is fixed or not.

If this method does work for your system no need to worry. We brought others. Try the given below.

Method 3: Update Your Graphic Driver

Most of our readers faced dev error 6034 due to a broken or outdated graphics driver, and we suggest you update your graphics driver. In addition, to avoid further complications and errors in your system, update your graphic driver.

  • First, you have to visit the website of your GPU manufacturer.
  • After that, you have to search for your GPU’s model.
  • Next, download a new driver installer that is suitable for your system.
  • After the download is complete, open your installer.
  • Finally, you must follow a few simple steps or instructions to update.

Method 4: Remove broken game files

It is believed that game files could cause the dev error 6034. There is a solution to fixing it through repairing and scanning it. However, before doing that, you must delete specific game files manually to ensure that Blizzard downloads the most recent version:

  • Open the game’s installation folder in your system.
  • The next step is to delete some folders given below.
  1. .patch.result 
  2. .product
  3. vivoxsdk_x64.dll
  4. Launcher.db
  5. Modern Warfare Launcher.exe
  • Suppose all folders are deleted, then open Battle. Net.
  • Click the COD Modern Warfare Game.
  • Click on the options menu.
  • Choose scan and repair and start scanning of files.
  • The scanning process generates missing files and makes new copies of outdated files.
  • Start your game to check whether dec error 6043 has been resolved or not.

Method 5: Clear The Cache Of The Xbox 

The system may cause dev error 6034 due to the cache of the Xbox, and the best solution is to empty the Xbox cache to resolve this error. Here are a few simple steps.

  • Firstly shut down your Xbox.
  • After that, remove the power cable from the rear of the Xbox and the electrical outlet.
  • Also, unplug the power cable from the Xbox’s back.
  • Now turn to reconnect your Xbox power cables.
  • You have to wait after reconnecting your power cable to Xbox until your system’s power light changes its colour depending on your type of system.
  • Now check if your system dev error 6034 is resolved or not.

Method 6: Remove Multiplayer game packs

Removing multiplayer game packs can be used when you do not want to reinstall the complete version of the game, and primarily players do this when they observe dev error 6034.

It may be a partial solution to dev error 6034, but it is beneficial to some extent.

Follow these steps to remove the multiplayer game pack.

  • First, you must select Call Of Duty: Modern Warfare then choose Manage game & add-ons.
  • After the first step, you must select Manage installation on an external drive.
  • Then, go down and unmark MP2 Pack and Multiplayer Pack 3 and save changes.
  • Finally, restart your Xbox and check whether it is resolved or not.

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We are concluding our writing here, and there are some other methods of fixing dev error 6034, but the methods mentioned above are mostly safe.

If you want to avoid other complications in your system, follow these methods and give steps.

We have mentioned some recommendations that might help you to avoid future systematic errors so kindly read them carefully.


We provide some fundamental suggestions to avoid dev error 6034, so read carefully and apply these recommendations to your system to make it free from errors. 

  • Maintaining the system’s refresh is a simple method for solving unexpected problems. So, if you receive an error message, immediately restart your computer to avoid future problems and end ongoing issues.
  • Scanning and fixing the game’s data files is an excellent method to fix the problem issues with codes within Modern Warfare or War Zone.
  • The available companion software is designed for NVIDIA and AMD graphics cards that keep drivers updated in the background.
  • You can manually search for the latest drivers, particularly in the case of Dev Error 6034.
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