Many players have reported they can’t play Call of Duty: Black Ops 6 because of error 0x00001338. For example, a player said this about that error on Steam, “I am unable to play the game due to this error, ‘Call of Duty Black Ops 6: Error Code 0x00001338.’” Error code 0x00001338 can also crash the Modern Warfare 3 and MW2 games. This is how you can fix the Call of Duty: Black Ops 6 (BO6) error 0x00001338 on a Windows PC.
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Run Call of Duty: Black Ops 6 With Administrator Rights
Some players say running Black Ops 6 with admin rights has fixed the BO6 error 0x00001338 on their PCs. To do that, press the Windows + S hotkey to bring up the search box. Then, input a Black Ops 6 search phrase, right-click the game found, and select Run as an administrator.
The Run as administrator option
Delete the Mp24 Folder
Deleting the mp24 folder has fixed the BO6 error 0x00001338 for some players. The mp24 folder includes a shader cache subfolder, which might contain corrupted data. This is how you can delete the mp24 subfolder:
- Open the Battle.net launcher software.
- Select the Call of Duty game on Battle.net.
- Click the cog button on the right of Play to select Show in Explorer.
- Next, open the _retail subfolder within the Call of Duty directory.
- Right-click mp24 to select Delete.
The mp24 folder location and the Delete option
- Return to Battle.net and click the cog button for Call of Duty.
- Select the Scan and Repair option.
The Scan and Repair option
Verify and Repair Black Ops 6
Some players confirm verifying and repairing Black Ops 6 can fix the BO6 error 0x00001338. This is the potential fix you can try applying via the Xbox app, Steam, and Battle.net. These are the steps for verifying the game with the Xbox app:
- Open the Xbox game app.
- Right-click your Black Ops 6 game on the Game Pass tab to select Manage.
- Click the Files tab.
- Press the Verify and Repair button.
The Verify and Repair button
- Click Yes to confirm.
Battle.net and Steam include similar verification options. You can verify Black Ops 6 in Battle.net as outlined on this Blizzard support page. If you’re a Steam user, go through the steps on this help page.
Close Valorant’s Vanguard Anticheat
Closing the Vanguard anti-cheat program has worked for some players who’ve needed to resolve the BO6 error 0x00001338. Do you have Valorant’s Vanguard anti-cheat software on your PC? If so, make sure that anti-cheat is fully closed before starting Call of Duty: Black Ops 6.
Reinstall Gaming Services
If you’re an Xbox Game Pass user, try reinstalling the Gaming Services app. Doing this can potentially resolve issues with Gaming Services that could be causing the BO6 error 0x00001338. These are the steps for reinstalling Gaming Services:
- Activate the file-finder tool in Windows.
- Enter CMD and right-click Command Prompt to select Run this program as an administrator.
- Input and execute the get-appxpackage Microsoft.GamingServices | remove-AppxPackage -allusers command.
The get-appxpackage command
- Next, type in start ms-windows-store://pdp/?productid=9MWPM2CQNLHN and hit Enter to bring up a Gaming Services app page in MS Store.
- Click Install to reinstall Gaming Services.
Other Possible Ways to Fix the BO6 Error 0x00001338
If the BO6 Error 0x00001338 continues to occur, there are other possible fixes for that gaming issue you can try applying. Here are some additional suggestions that could be worth a try:
- Disable overlays in Discord, Steam, GeForce Experience, and MSI Afterburner (uninstalling this software would be better).
- Install all available Windows patches and optional updates for your PC, as covered on this Microsoft page.
- Reinstall your Black Ops 6 game.
Those are some of the best ways to fix the BO6 error 0x00001338 on Windows PCs confirmed to work by players. Some of those potential resolutions above can also fix the same gaming issue for Modern Warfare 3. You can also ask Black Ops 6’s Activision help service for more potential fixes by sending a support ticket from this help page.
