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Warzone 2 Dev Error 657: How To Fix

Unable to enter the game lobby due to an error? Check out our guide on how to fix Dev Error 657 in Warzone 2.

COD Warzone 2.0 is a free-to-play Battle Royale video game that features several new gameplay mechanics and unique modes. But as an online multiplayer game, it is bound to have some bugs and glitches. Dev Error 657 is one such error that players are encountering quite recently. You can encounter this error while going through the loading screen. Players are worried that they would lose their progression and stats due to this Dev error. Not to worry, check out our guide on how to fix the 657 Dev Error in Warzone 2.0

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How to Fix Dev Error 657 in Warzone 2

cod warzone 2 dev error 657

There can be several reasons for this error to occur. Similar to other Dev error codes, you can resolve this error with some simple workarounds.

So, here are some ways to fix the Dev Error 657 in Warzone 2:

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Check for Updates

Before going through any updates, make sure that COD Warzone 2.0 is updated to its latest version. You can update the game by heading over to the game launcher or client.

If you are using Steam, follow the below steps:

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  • Launch the Steam and head over to its Library.
  • Right-click on COD Warzone 2.0 on your left pane and select the Update option.
  • Once the update is downloaded and installed, launch the game to check if the error persists.

For the players using the Battle.net launcher, follow the below steps:

  • Launch the Battle.net client and select the Games tab.
  • You need to select Call of Duty: MW II | WZ2.0 from the drop-down section.
  • Then, select the cog-wheel or gear-shaped icon next to the Play button.
  • Lastly, select the Check for Updates option.

cod warzone 2 dev error 657

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  • Similar to the previous method, launch Warzone 2 once the update is installed to check if the error persists.

If you encounter Dev error 657 in Warzone 2.0 again, try out our next method.

Scan & Repair/Verify Integrity of the Game Files

You can encounter this error if one of your game files is corrupted or missing. This method would re-download those missing files. So, here’s how to repair your game files using the Battle.net launcher:

  • As you launch Battle.net, select COD MWII | WZ2.0 from the dropdown section.
  • Now, hit the cog-wheel-shaped icon and select the Scan and Repair Game Files option.

For Steam players, follow the below steps:

  • Head over to the Games Library and right-click on COD Warzone 2.0.
  • Select the Properties and hit the Local Files tile on your left pane.
  • Lastly, select the Verify integrity of the game files.

cod warzone 2 dev error 657

You can launch the game to check if the Dev Error persists.

Activision Support – How to Fix Dev Error 657

If none of the above methods worked out, you can head over to Activision Support. Over there, you can submit a ticket as you explain the error or issue you are encountering. The assistance team would revert and get back to you with a suitable workaround in some time. We hope Infinity Ward resolves this issue in their upcoming patch or update. 

That’s everything covered about how to fix Dev Error 657 in Warzone 2. If you liked this guide, check out our guides on how to fix the Bomb Drone Glitch, how to fix the error code HUENEME-CONCORD networking issue, the best contracts to choose, and more COD Warzone 2.0 Guides on our dedicated section right here on Gamer Tweak.