Players logging into Season 1 may see an incorrect error message stating their data is corrupt. Rest assured that your rank, unlocks, and purchases are not lost, although Loadouts, customization, and certain settings may be reset.
— Call of Duty Updates (@CODUpdates) December 6, 2023
Fortunately, the official Call of Duty Updates Twitter account has acknowledged the same issue. Well, this is an in-game bug and developers are investigating it. Meanwhile, the tweet mentioned that resetting the player rank in MW3 Season 1 won’t lose any data such as the rank or unlocks or purchases. But loadouts, customization, or other specific settings may be reset. So, you should have to wait further until developers address this error.
Meanwhile, here we’ve provided you with some workarounds that might come in handy. Make sure to follow all troubleshooting methods until the problem has been fixed. So, without further ado, let’s jump into it.
1. Run MW3 as an Administrator
You should run the Call of Duty game executable app as an administrator to avoid user account control regarding privilege issues. The chances are high that your game application is somehow getting blocked by the system admin permissions. To do this:
- Right-click on the COD MWIII.exe app on your PC.
- Now, select Properties > Click on the Compatibility tab.

- Enable the Run this program as an administrator option.
- Click on Apply and select OK to save changes.
2. Update Modern Warfare 3
In some cases, an outdated game patch version can trouble you a lot due to stability issues or bugs. So, it’s recommended to check for the game updates manually by following the steps below.
Battle.net:
- Open Battle.net.
- Click on Game Library > Choose Modern Warfare III.
- Now, click on the cog wheel icon.
- Select Check for Updates.
- Make sure to download & install the update, if available.
Steam:
- Open Steam > Go to Game Library.
- Right-click on Modern Warfare III.
- Select Properties > Click on Updates.
- Now, go to Automatic Updates.
- Select Only update this game when I launch it.
- It’ll automatically install updates whenever available.
3. Scan and Repair the Game Files
Sometimes corrupted or missing game files on the PC might also trouble you while starting the game. It’s always better to verify and repair the game files by following the steps below on your PC to avoid errors.
For Battle.net:
- Open Battle.net > Click on Modern Warfare III.
- Select the Cog Wheel icon next to the Play button.

- Now, select Scan and Repair > Wait for the repair to complete.
- Once done, reboot the PC to apply changes.
For Steam:
- Open the Steam client > Go to Library.
- Right-click on Modern Warfare III in your library.
- Go to Settings and select Properties.
- Click on Local Files > Select Verify integrity of game files.

- Wait for the process to complete.
- Once done, reboot the PC to apply changes.
4. Check for Activision Online Services
You can also try checking the Activision Online Services by following the steps below to ensure there is no issue with the server status. Sometimes server status regarding issues might also trouble you with the multiple in-game challenges.
- Visit the Activision Online Services page to check it.
- Select the drop-down menu > Click on Call of Duty: Modern Warfare III from the list.
- If you’re seeing All Platforms ONLINE then it indicates there is no issue with the game servers at that moment.
- You can also click on the Refresh link to manually refresh the page.
However, if you’re seeing server issues then wait for a couple of hours to check for the same. In case, the services are running fine then head over to the next method.
Last but not least, you should contact Activision Support for the Call of Duty Modern Warfare III (2023) game to get better assistance. Additionally, you can try submitting the support ticket so that the developers can deeply investigate the issue & help you further.
That’s it, guys. We assume this guide was helpful to you. For additional queries, you can comment below.