If you’re struggling with this problem, don’t worry; we’re here to help. Just try the below solutions to get rid of the problem for good.
What Causes the Call of Duty: Warzone Dev Error 6661?
The Dev Error 6661 in Call of Duty: Warzone (or just “Warzone” for short) mainly appears when you try to run the game without administrative permissions. However, there are a few other culprits that can cause this issue:
The Warzone Dev Error 6661 can pop up if you try to play the game with DirectX 12. If there is any ongoing server issue, it can trigger the 6661 error. The problem can also appear due to corruption in the game files.
Now let’s dive into all the solutions you can consider to solve the error code.
1. Restart Your PC
Before trying any advanced troubleshooting steps, make sure you have already performed the most generic fix for all Windows PCs: restarting the system. As it turns out, sometimes a restart is all your PC needs to get the game working normally again.
So, restart the system and check if it resolves the problem or not. If not, try the next solution on the list.
2. Run COD Warzone as an Administrator
As aforementioned, Dev Error 6661 will mainly appear when users try to run the game without administrative permissions. Modern games like Call of Duty Warzone require admin rights to run without any issue. If this isn’t the case, you will likely face different error messages.
So, run the application as an administrator and check if it fixes the problem or not. You can do it by following the below steps.
Right-click the Call of Duty Warzone icon on the desktop and choose Properties from the context menu. Switch to the Compatibility tab. Checkmark Run this program as an administrator option. Click on Apply > OK.
3. Check for Any Server Issues
Like any online multiplayer game, Call of Duty Warzone servers can go down for various reasons. During this phase, you will face different errors while trying to access the game. So, consider checking the Activision server status whenever you encounter Dev Error 6661.
4. Run Warzone With DirectX 11
Call of Duty: Warzone is playable with both DirectX 11 and 12. But for many users, playing the game specifically on DirectX 12 can cause problems, including the Dev Error 6661.
As such, try running the game on DirectX 11 and see if you get a more stable experience. Here’s how to do it.
Launch Battle. net on the system. Click on the Gear icon next to COD Warzone and choose Game Settings from the context menu. Click the checkbox for Additional command-line arguments. Type -d3d11 within the text box for the command line argument. Click on Done to save the changes.
Relaunch the game and check if the problem is fixed or not.
5. Repair the Game’s Files
Call of Duty: Warzone can run into errors if it has corrupt or broken game files. You can detect and repair these files using Battle.net’s built-in scan and repair feature:
Open Battle. net and click on the Gear icon next to COD Warzone. Choose the Scan and Repair option. Click on Begin scan to start the process.
Once the scanning process is complete, a repair update will be required to finalize the process.
6. Update Call of Duty: Warzone
One of the best ways to resolve any issue in a multiplayer game is to download any pending updates for the game. So, consider downloading any available update for COD Warzone and check if it fixes the problem. You can update the game by following the below steps.
Open Battle. net and click the Gear icon next to Warzone’s Play button. Choose Check for updates from the context menu.
The launcher will now look for and download any available update. After that, reboot the system and check for the problem.
7. Clear Warzone’sTemp Folder
The temp folder on a Windows PC contains temporary files of all the installed applications. But for any reason, if these files get corrupt, you will face different issues, including Warzone Dev Error 6661.
As a solution, consider clearing the content of the temp folder. Here are the steps to do it.
Open the Run dialog box using one of the many ways to open the run dialog box. Type %temp% in the search box and press Enter. Select everything inside the temp folder, right-click, and choose Delete from the context menu.
That’s it. Check if the problem continues.
8. Optimize Warzone Using Nvidia GeForce Experience
The problem can appear if you are not running the game on optimal graphics settings. As it turns out, misconfigured graphical settings can glitch the video codecs and cause the problem.
If you’re using an Nvidia-brand graphics card you can optimize the graphical settings using the Nvidia GeForce Experience. Here’s how to do it.
Launch Nvidia GeForce Experience on the system. Hover the cursor to Call of Duty Warzone and choose Details from the available options. Click on Optimize.
If you’re playing the game on a laptop, click Optimize for both Plugged In and On Battery options.
9. Reinstall the Game
If you are still facing the problem, most probably, it is being caused due to an issue in the game’s installation. As a solution, you will have to reinstall the game. Here’s how.
Start the Battle. net client. Press the All Games button. Select Call of Duty: Warzone, and click on the Gear icon. Choose Uninstall on the menu. To reinstall COD Warzone, click its Install button in Battle. net.
Call of Duty Warzone Dev Error 6661, Fixed
It’s very common to encounter COD Warzone 6661 on Windows, but it’s very easy to fix. Hopefully, these solutions have let you get back into the game, error-free.
