How to fix dev error 6345 ( Solved ) Call of Duty: Modern Warfare

Call of Duty: Modern Warfare “dev error 6345” explained Though triple-A games may look more injury-proof than indie titles from outside, even titans can shiver. Call of Duty: Modern Warfare players aren’t strangers to occasional server problems that come and go whenever a double XP weekend kicks off, but a fundamental error that prevents you from even launching the game can be scary.

It’s hard to tell how your in-game files may have gotten damaged, but it mostly happens when your connection starts suffering while downloading an update. If the downloader decides to skip one of the files or does a poor job of installing it, it could cause a corrupted file to appear in your game’s directory.

How to fix the “dev error 6345” in Call of Duty: Modern Warfare

One of the easiest ways to fix this problem is running a Scan and Repair session, which goes through all of your in-game files and re-downloads anything that looks corrupted. Click on Call of Duty: Modern Warfare from the left side of the launcher and find the Options menu that should be located on top of the first image.

Once you open the Options menu, you’ll want to click on the “Scan and Repair,” which will prompt you with a warning pop-up. Begin the scan and let the launcher do its thing. The scan takes a while since CoD: Modern Warfare is a rather massive game in terms of its size, and a follow-up update should kick-off immediately if the scan detects a corrupted file.

  • If running a simple scan doesn’t fix your problem follow this steps: 
  •  Go to your COD:MW instalation folder 
  •  Click on "Data" then again "data"
  • Find your 0KB file 
  • Ask a friend for uploading his working file to: Google Drive or One Drive 
  •  Drag & Drop the working 0,99GB file of your friend into the folder and replace it


  • Start your game, all should be fine now!

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