If the internet connection is not working, then such dev errors will pop up from time to time. Please connect with your internet service provider (ISP) to troubleshoot any issue with your internet connection.
Method 4: Update Game
Although COD developers haven’t acknowledged the dev error 657 on the office bug reporting tracker yet. But since the game’s official launch, there have been multiple game patch updates. Many users over Warzone forums suggest that updating the game to the latest version fixes the dev error issues for both PC and console players.
Method 5: Restore License (For Consoles)
If you’re playing the game on consoles such as PS4, PS5, or Xbox, then there is a good chance that these dev errors are caused due to console gaming licenses. But don’t worry; you can restore these licenses by following the steps below:
- Open the settings menu on your PlayStation console and navigate to the users & accounts section.
- Click on the Others tab on the left-hand side.
- Click on the Restore Licenses option and wait for the process to finish.
The content may not work as intended in case of damage/alteration to console licenses. The above steps are for PS5 but will also be for PS4 and Xbox consoles.
Method 6: Repair COD Warzone 2 Game Files
If you have downloaded the game from the Battle.net client, then you can use the inbuilt scan and repair tool to fix such issues with the game. Since the issue of Dev error 657 is caused due to missing game files, repairing any missing game files will help to fix this.
For Battle.net users:
- Open the Battle.net client on your PC.
- Click on the Call of Duty: Warzone 2 game.
- Now, click on OPTIONS (Gear icon) > Click on Scan and Repair.
- Choose Begin Scan and wait for the process to complete.
- Once done, close the Battle.net launcher, and restart your PC.
For Steam users:
- Launch the Steam client > Click on Library.
- Right-click on COD: Warzone 2 from the list.
- Click on Properties > Go to Local Files.
- Click on Verify Integrity of Game Files.
- This process may take some time to get completed. So, have some patience.
- Once done, make sure to reboot the PC to apply changes.
Method 7: Whitelist Warzone 2 from Antivirus
According to multiple users over Warzone 2 game forums, antivirus and antimalware apps are interfering with the game files, and stopping them will definitely cause dev errors. So make sure you whitelist COD warzone 2 along with your steam client to ensure no interruption.
Once you whitelist the app, you ought to restart your PC as well. If you use any additional antimalware app, then you might need to whitelist warzone 2 there as well.
Since many of the dev errors are caused due to failed internet connection, it is quite important that you configure your PC/console’s internet firewall if you are using any. This also stands true for any VPN connection that you might be using. Ensure your PC/console can make uninterrupted requests to the game server. This will eventually fix the dev error 657 issues with COD warzone 2.
Method 9: Force the Game to Run on DirectX 11
DirectX is a crucial component for COD Warzone 2 to work properly. If there are any misconfigurations with the DirectX setup, the game will throw multiple errors, including dev error 657. Make sure that the game uses DirectX 11 engine to run properly. Follow these steps to do so:
- Open the Battle.net application and select COD Warzone 2.
- Then click on Settings log and then move to game settings.
- After that, click on the check box of Additional command-line arguments and then enter d3d11 on the text box and press Ok.
Method 10: Reinstall COD Warzone 2
If none of the above methods helps, then the issue might be with the game itself. It is quite possible that some of the important game files got corrupted, so the game is throwing multiple dev 657 errors.
Although the game is quite big in size, at this point, it would be good to re-install the game. Before re-installing, ensure you save your game process linked to your Steam/ Battlenet account and then uninstall the game completely.
Conclusion
This brings us to the end of this guide for fixing COD Warzone 2 dev error 657. Please note that the game developers haven’t released any patch to address this issue. So make sure to follow the above method to fix the developer error. If nothing helps, we recommend you uninstall the game and the residue files and then re-install the game from Steam.
