How to Fix Dev Error 6034 in Call of Duty: Modern Warfare and Warzone

In-game errors have become a new phobia for many gamers. Unfortunately, these errors destroy all the fun and gaming experience of players. In recent times, Call of Duty players have been facing an error which is not only troubling gamers but also the developers. This Call of Duty Dev Error 6034 seems like it is even difficult to fix for the developers.

Every year there’s a new Call of Duty game to give us the thrills and chills we crave as gamers. But, every once in a while, there will be an error. It could be anything: game freezes, can’t connect, or maybe someone just got fragged by a super glitchy wall of death. But what happens when you get Dev Error 6034?

Are you also stuck with this error? If yes, then you need not worry, fixing this error is now on us. This guide will help you with the steps to fixing this error and help you play your favorite Call of Duty game again.

Fix Dev Error 6034 in Call of Duty: Modern Warfare and Warzone

What is the Reason for Dev Error 6034 in Call of Duty: Modern Warfare and Warzone

First, the following are the most common reasons for this error. If you can rule them out, then you probably have a different problem!

1. Your video card is corrupted.

99% of the time when you have problems with CoD games, it’s because your graphic card is NOT compatible with the game or you’re missing drivers. Make sure you have the latest drivers. You can also try reinstalling your graphics card, we’ve had some success with this in the past.

2. Your CPU is not powerful enough

Many CoD players don’t have enough CPU to run CoD without getting errors or freezing – especially if you’re running a server that has lots of players on it. If this is the case, be sure to check out our article on buying a gaming PC to get some recommendations for high-performance CPUs.

3. Your MW disk is corrupted

If you’ve played MW a lot or used it a lot, there’s a chance some of the files have become corrupted and need to be reinstalled. The surest way to fix this is to play MW offline with no one else connected, and right-click on the game icon and select Properties > Compatibility > Remove All > Apply.

You will need the latest MW patch installed (1.2 or higher) for this option to work. Afterwards, go to the MW folder (typically C:Program Files/Call of Duty Modern Warfare) and delete everything in there. Reinstall MW 1.2, and start the game as Administrator (see above).

4. You have an antivirus or anti-malware Software on your computer.

Anti-virus software and anti-malware programs can cause problems with your game by adding unnecessary, overlapping or conflicting software. We recommend you disable these programs (or use compatibility mode) to play the game.

By now, you must have known the reasons for the error. However, this is the first step only. That being said, after the diagnosis process follow the workaround and some precautionary steps mentioned below to eliminate the error.

How to Fix Dev Error 6034 in Call of Duty: Modern Warfare and Warzone

  1. Click on the Modern Warfare or Warzone installation folder
  2. Find and remove the files named: .patch.result, .product, vivoxsdk_x64.dll, Launcher.db, Modern Warfare Launcher.exe
  3. Now, click on
  4. Click on the Options’ dropdown
  5. Then process a Scan and Restore on Modern Warfare and/or Warzone

Follow these steps properly will change the removed files with new ones which will fix the error.

Using solutions is okay but what’s more important is to follow some precautionary steps which will neglect the chance of facing this error in future. Adding on, here are some steps you can take regarding the same.

How to protect your game in the future

Call of Duty Single Player is typically only available on Steam and Origin. Here are the things to prevent this error:

Have a backup of your system files.

“What do I backup?” You’ll want to make sure you have a copy of your Call of Duty gamestats (current or last saved version), game configs, video settings, audio levels, and all that stuff you’ve spent hours tweaking.

Download, install the latest version of CoD:MW and CoD:WW.

So for example, if you have CoD:MW v1.1, you would need to download the Windows version (CoD:MW 1.2), and then install it on your machine. Don’t worry, MW has been fixed and is now compatible with v1.3/v1.4 of the game so you won’t run into any problems there.

Choose your server options.

If you have COD:WW on your computer, you can choose the server you wish to play on. If it’s at all possible, choose the closest one to you. The closer the better, as the servers are more likely to have a higher ping and less errors. You can also contact a COD:MW clan and ask them if they can help out with hosting their own servers for the game.

Delete Temp Files and Folders.

Right click on your Computer/local disk (C:) and go to Properties. Click on the button in front that says Disk Cleanup, and it will pop up a new window. Here you can select temporary files, application caches, operating system files, and download history to be deleted. Delete what you don’t need.

Run the game as an administrator.

Right click on your Call of Duty: Modern Warfare or Warzone game icon and select Properties. In the Compatibility tab, tick the box labeled “Run this program as an administrator” and then click OK.

Keep Your Graphics Card drivers Updated

Typically when you have issues with Call of Duty games, it’s because you don’t have the latest drivers installed to avoid performance issues or glitches. This is most common in nVidia cards, so check their site for updates as well as AMD’s site (if you’re running an AMD graphics card – such as the HD7770 or HD7850).

The Bottom Line

Hopefully the information provided above would have fixed the error. If you have any questions or concerns, please leave them below and we’ll be sure to try and answer them! Thanks for reading and stay tuned to our blog for more awesome gaming guides!

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