Ever since the release of Call of Duty Modern Warfare and the subsequent Warzone, the dev error have plagued the COD community. The occurrence of these errors are so widespread that it’s unlikely any player would not have come across one or the other dev error. Although the Call of Duty Modern Warfare & Warzone Dev Error 6034 existed since the early days, their occurrence after the Season 5 update has inflated. Earlier, players mostly encountered the dev error 5759 or 6328, among others, but the growing occurrence of 6034 is preventing a lot of players from the game. Fortunately, we have some fix that can potentially resolve the dev error. Try the different solutions one at a time until the error is fixed.
How to Fix Call of Duty Modern Warfare & Warzone Dev Error 6034
At this point, you should know that none of the solutions we are about to suggest are universal. They work for some users while they don’t for others. Hopefully, you are in the lucky group.
Run Scan & Repair through Battle.Net
As we browsed through forums looking for a solution to the call of duty dev error 6034, we found a lot of users were able to resolve the error by performing the Scan & Repair via the Battle.Net client. To perform the steps, launch the Battle .Net client and open the game. Click on Options, Scan and Repair, and Start Scan. Hopefully, this solutions should resolve the error. If not, we have some other solutions you can try.
Run the SFC Command
If the error is occurring due to a corrupt file on your system, running the System Files Checker could possibly fix the problem. To perform the steps, you have to launch the Command Prompt in administrator mode. After launching the Command Prompt, enter the command sfc /scannow and hit enter. Wait for the process to complete, it can take time up to 20 minutes. If the system detects corruption, it will repair and restart. After the restart, launch the game and check if the problem persists.
Uninstall and Reinstall
I know the game size is huge and this fix can be a pain for people with slow internet connection, but a lot of dev errors can be fixed by uninstalling the game completely and reinstalling. Users on various forums have confirmed this to be the most working fix in resolving the dev error 6034. But, there were also users who could not resolve the error even after trying the fix. So, consider your options before you proceed.
Hopefully, the nagging error is resolved for you by following the above fix. If not, write to Activation about the problem or if you have a more working fix comment below.