If you see a Dev error 426 while playing COD Warzone, Modern Warfare, or Black Ops Cold War, you are at the right place for a fix and an explanation. Well, the Dev error is common for players of the COD franchise. Activision’s error codes have extensive documentation and hence, are easily solvable. However, sometimes a new error code shows up, and players don’t know how to solve such an error. Want to fix the Dev error 426 and play COD again? Well, don’t worry, as we have got you covered! Read this article to know more about what Dev error 426 means and how you can try and fix it.
Note: If you are on a console, you can read this article for console-specific steps.
COD Warzone and Black Ops Cold War Season 5 is now live
Before diving into the topic, we wanted to let you know that Warzone’s and Black Ops’s Season 5 went live on August 13. But what does this have to do with the dev error? Well, of course, there’s a connection. Activision’s dev error is known to pop up mostly when a new update or patch is released. What does this reveal about the error? Keep reading to know more.
Activision Dev Error 426: What is it?
Since the error is most prevalent around a new update, we can safely assume that the new download breaks something in the game. Players facing the Dev error 426 are complaining of not being able to connect to servers. Some are complaining of lags and freezes in the game as well. This is happening even after players have updated the game to its latest version.
I have not been able to connect online by wifi/Ethernet. I can only connect through my mobile hotspot. If I try to switch back to Ethernet/wifi router connection I get a dev error 426. Please. Help.
— Sahil Rangari (@sahil696969) September 15, 2020
Please fix the error code Dev error 426 when playing modern warfare offline… the game is unplayable at launch because of this error offline even if the game is updated online previously
— Miles kino (@ffswdfcsd) May 14, 2021
Activision Dev error 426 may happen due to some integrity issues with files. This means some files required to run the game are missing or corrupted. Also, it can be due to a corrupted or incomplete windows update. In short, you will have to check a few things to solve this issue. We are listing all the possible fixes for you.
- Check integrity of game files: To do so, open the Battle.net client. From the left menu, select the game in which you are getting the error. You will see an Options drop-down menu. Click on that and select Scan and Repair > Begin Scan. After the scan is done, you can launch the game and check whether the error is still showing up. Check the next fix if the error still occurs.
- Check for pending windows update: Go to Windows Settings > Update & Security. Then click on Check for updates. You will see any pending or corrupted updates. Install all of them and make sure you follow proper instructions to rule out corrupted updates. Restart your system, and then try launching the game. If the Activision Dev error 426 persists, try the next fix.
- Delete user config files: To do so, open the Run Dialog box. Type %USERPROFILE%\Documents and click OK. Look for your game folder, open it, and delete all files inside it. Launch the game and check whether the issue is still there. Try the next fix if the error is not solved yet.
- Complete updates of your graphic drivers: This is important as incompatible graphic drivers can render a game unplayable. Visit the Geforce experience app or your GPU manufacturer’s app to complete any pending updates.
- Check Activision’s servers for the game you are playing: Check the official Twitter page of Activision for any information on server issues. If you are on console, check the status of your console servers as well. You can also check for the same here.
The above fixes should be enough to fix the Activision Dev error 426. If you are still having trouble, try using a different game account to log in, as the error can be restricted to particular accounts. Updates on video games can be a bit messy and spit out such annoying errors.
If you are unable to solve the issue with the above fixes, we suggest you put an in-game report or visit Activision Support from here to submit a ticket.