• May 22, 2024

Dev Error Code 6634 in Call of Duty: Warzone – How to fix

Dev Error Code 6634 is an extremely common error in Call of Duty: Modern Warfare. a problem that has plagued Warzone players for quite some time. PC, PS5, Xbox Series X and S – this code affects users on absolutely all platforms. Typically, the error occurs due to a damaged game cache or “crooked” installed multiuser packs, but there are other reasons as well.

Reasons for the appearance of Dev Error Code 6634 in Call of Duty: Modern Warfare

Let’s go through the reasons for the appearance of Dev Error Code 6634 in a little more detail:

  • Glitch with a clock (in-game item).
  • Problem with multiplayer packs 2 and 3 (on consoles).
  • Corrupted Battle.net cache (on PC).
  • Incorrect installation of shaders (on a PC).
  • Conflict between Call of Duty: Modern Warfare game mode files (between singleplayer, multiplayer and zombie mode).

Dev Error Code 6634 solution in Call of Duty: Modern Warfare

Dev Error Code 6634

Solution # 1 Getting rid of the clock

It may sound extremely strange, but Dev Error Code 6634 can occur in Call of Duty: Modern Warfare if the player chooses a certain combination of watches and operators. Most often, the error is encountered by players who want to choose Stitch and any watch of the Cold War

Solution? Well, the most commonplace solution is to remove the watch from your equipment. Or try to find such a combination of equipment, in which the error 6634 will not appear.

Solution # 2 Removing the second and third multiplayer packs (only on consoles)

In some cases, the content of the second and third multiplayer packs may not be installed correctly or be in a real conflict with new updates from the developers, as a result of which Dev Error Code 6634 occurs. This happens on Xbox Series S, Xbox Series X and PS5. But the owners of the PC version of the game were lucky in this case.

What do we have to do? The answer is to remove the second and third packs from your console, check for an error, and install the packs back if the error has disappeared. On each console, the process for removing additional content is slightly different, but not much: you need to go to the section with installed games, select the required toy (in our case, this is Call of Duty: Modern Warfare), go to its add-on. content (or managing it), select and delete the second and third multiplayer packs.

Once you’ve got rid of the problematic content, restart your console and check for Dev Error Code 6634 in Call of Duty: Modern Warfare.

Solution # 3 Delete the Battle.net cache (PC only)

If you see Error 6634 when launching Call of Duty: Modern Warfare through Battle.net, then you are almost certainly dealing with a corrupted Blizzard launcher cache. You need to get rid of the cache that is on the system partition of the disk, and then the problem will be solved. Here’s what you need to do:

  • Press WIN + R to bring up the Run window.
  • Paste “% ProgramData%” into a blank line in the window and press ENTER.
  • Go to the Blizzard Entertainment → Battle.net → Cache folder.
  • Select all files and folders by pressing CTRL + A, then press SHIFT + DELETE to delete all selected items.
  • Reboot your PC.

If your connection to Call of Duty: Modern Warfare multiplayer modes is still ending with Dev Error Code 6634, then try the method below.

Solution # 4 Reinstalling game shaders

According to some users on the web, error 6634 can occur if the Call of Duty: Modern Warfare shader cache has been corrupted and can no longer be used properly by the game. To fix the cache problem, you need to do the following:

Dev Error Code 6634

  • Open Call of Duty: Modern Warfare as usual and wait for the start screen to appear.
  • Select “Warzone” mode and wait for the game to start.
  • Open “Options” and go to the “Graphics” tab.
  • Go down below and click on the Reinstall Shaders button.
  • Confirm your intentions and wait for the shader reinstallation to complete.

The note: this procedure can take a considerable amount of time, especially if you are not using a modern SSD.

After reinstalling the shaders, launch Call of Duty: Modern Warfare again and check for Dev Error Code 6634.

Solution # 5 Removing Call of Duty: Modern Warfare and installing only Warzone

If you believe the information on the network, Dev Error Code 6634, as a rule, occurs most often on the full version of Call of Duty: Modern Warfare, while the standalone version of Warzone suffers from such a problem, but much less often. It’s hard to say why this is happening at all. Perhaps the point is some kind of conflict between the game files or a bug that appears at the most inopportune moments.

Only play Warzone? Well, then the decision is obvious: remove Call of Duty: Modern Warfare from your device and install Call of Duty: Warzone instead. Not only will you not lose anything, but you will also free up additional space on your disk.

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