Are you getting the Warzone/Modern Warfare dev error 6034 when you try to play your favorite game on PC? Don’t worry, you’re not alone.
Call of Duty Warzone/Modern Warfare Dev Error 6034 is a coding issue that can keep you from playing. Without detailed knowledge of the game’s code, it’s hard to fix this error.
Thankfully, there are a few solutions to this problem. Check out our guide to troubleshooting and repairing dev error 6034 to get back into your game!
Causes of dev error 6034 in Warzone/Modern Warfare
Dev error 6034 is an error that appears in some Call of Duty games. It can happen when the game files become corrupted or are not correctly written to disk. The most common cause of this error is incorrect installation of a Call of Duty game. Another possible cause could be due to conflict between other programs running on the computer while you’re playing the game. To fix this, you should uninstall and reinstall your game and make sure that no other programs are running while playing.
How to fix Dev Error 6034 in Warzone & Modern Warfare
1. Restart your game (PC/Xbox)
A simple fix for Dev error 6034 Xbox One is to restart the game. This will clear out a temporary glitch or cache. You can try closing the COD Warzone/Modern Warfare game normally and see if it fixes the problem. Try restarting your PC or Xbox One if it doesn’t work.
2. Xbox: Clear the cache
Dev error 6034 Warzone Xbox may occur when the Xbox One’s cache gets corrupted over time. Depending on your console, clearing the cache files may fix the problem.
Step 1. Hold the Power button until your console is completely shut down (all lights are out).
Step 2. To clear cached data, unplug the power cable from the console and wait for at least 30 seconds.
Step 3. Plug the power cable back into your console, and wait until the orange light on the power brick appears.
Step 4. If the Modern Warfare Dev error 6034 Xbox is fixed, turn on your console and relaunch the game.
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3. XBox: Clear the Reserved Space
Updates and patches are stored in reserved space. The game may trigger Dev error 6034 on Xbox One when it encounters issues using reserved space. In this case, you can try clearing the game’s reserved space.
Step 1. Select the Options button on your Xbox controller to access the game menu in Call of Duty: Modern Warfare/Warzone.
Step 2. In the Manage games and add-ons context menu, select Saved Data, and then open Reserved Space.
Step 3. Click on Confirm when prompted to clear the reserved space.
Check if MW Dev error 6034 Xbox appears after restarting your console.
Also Read: Solving the 0x87e11838 Xbox Error Code
4. Remove add-ons and data packs (Xbox)
Some users reported fixing the Dev error 6034 Warzone by removing add-ons and game data packs. It’s here you can try.
Tip: To fix this issue, navigate to Settings > General > Network Settings > Advanced Settings > Alternative Mac address > Clear and then restart your console.
Step 1. Choose Manage Game and Add-Ons from Step 1 to Step 2 in 3.
Step 2. Select Save changes after unticking the checkboxes of the following data packs in the Add-ons.
Note: The name may differ slightly, for example Data Pack 2 (8 GB) may be called Compatibility Pack 2. Check the pack size.
- MP2 Pack for Modern Warfare (size 9.1GB)
- The multiplayer pack 3 for Modern Warfare (3.4 GB)
Step 3. Reboot your console and see if you can play the game without COD Dev error 6034 Xbox. Alternatively, you can try removing these packs again:
- MP Pack 3 (3.4 GB)
- Data Pack 2 (8.0 GB)
- Campaign and Spec Ops Pack (14.8 GB)
- MP Pack (9.1 GB)
- Data Pack 1 (18.0 GB)
- Survival Pack (5.9 GB)
- High Res Pack 1 (23.6 GB)
- Resolution Pack
Also Read: Fix iPhone Boot Loop on iOS 16/15/14
5. Repair and scan your game files.
Call Of Duty Modern Warfare problems can sometimes be fixed by repairing the game files.
Here’s how to run Scan and Repair if you don’t know how:
- Launch Blizzard or Battle.net.
- Choose the game you want to fix.
- Click on the drop-down arrow near Options in the middle of the screen.
- Go to Scan and Repair.
- Click on Start Scan.
6. Delete files manually to fix the dev error.
You can also try manually deleting files to force the system to update the game again if the automated method didn’t work.
Here’s how:
- Go to the Warzone or Call of Duty: Modern Warfare installation folder
- Delete these files in the install directory:
- .patch.result
- .product
- vivoxsdk_x64.dll
- Launcher.db
- Modern Warfare Launcher.exe
- Use the Scan and Repair tool in the Battle.net launcher.
7. Change your DNS settings (PC/Xbox)
It’s possible that COD Dev error 6034 Xbox is caused by your DNS settings. To fix the problem, use a DNS server like OpenDNS or Google DNS.
Here’s how to change your DNS settings on Xbox One:
- Press the Xbox button to open the Home screen
- Go to All Settings, then Network.
- Go to Advanced Settings and select DNS Settings.
- Manually select 67.222.222 (OpenDNS) for Primary DNS and 208.67.220.220 (Google DNS) for Secondary DNS.
- Click on Continue to test the DNS server.
Change DNS Settings on PC:
- Click on Network and Internet > Network and Sharing Centre > Change adapter settings in the Control Panel and change View by type to Category.
- Select Properties from the right-click menu.
- Click on Properties after selecting Internet Protocol Version 4 (TCP/IPv4) in the Networking tab.
- Make sure the Preferred DNS server is 67.222.222 and the Alternative DNS server is 208.67.220.220. Save the changes by clicking OK.
8. (PC) Update your device drivers
Dev error 6034 is also caused by outdated graphics card drivers. Here’s how to update your GPU driver if it’s not the latest.
Step 1. Click the Start menu and select Device Manager.
Step 2. Go to Display adapters, right-click the graphics card driver, then select Update Driver.
Step 3. Follow the on-screen instructions to complete the update by selecting Search automatically for a driver. You can also download the graphics card driver from the manufacturer’s site.
9. Reinstall the Game
Step 1. Go to the Settings tab of your Xbox and select Call of Duty: Modern Warfare/Warzone under Games.
Step 2. Go to the Menu button on your controller and select Uninstall.
Step 3. Uninstall all and confirm. Wait for it to finish.
Step 4. Once it’s uninstalled, reboot your console and reinstall it. Make sure you only install these:
- Modern Warfare Base Game
- Multiplayer pack 2 (22.1 GB)
- Multiplayer pack (6.0 GB)
- Multiplayer and Special Ops pack (6.7 GB)
Try launching the game now and see if it fixes Dev error 6034.
Final thoughts:
In conclusion, Dev Error 6034 is a common problem when playing video games on a PC. A lot of things can cause it, including outdated drivers, corrupted game files, and game issues. You can fix the issue and get back to enjoying your games using the above steps. You can ensure that your PC is running smoothly and free of errors, making for a more enjoyable gaming experience. ThinkMatrics is always here to help people by their blog so if you like the blog then comment below or you can also comment if you need any help regarding any technical issue.