Call of Duty Modern Warfare 3 has gained much popularity among players around the world.

However, its common to encounter some issues like error code 0x00001338 (12488) N while playing it.

The complete oops message is:

The app has unexpectedly stopped working.

hit Verify integrity of game files

Allow Steam to Verify the integrity of your game files the next time you start the game.

The process will take a few minutes but it might solve your current issue.

Heres how to do it:

Step 1.

hit Check for updates

Navigate to:C:\Program Files (x86)\Call of Duty_retail_.

Then, paste them into theContentfolder (C:\XboxGames\Call of Duty\Content).

SelectReplace the files in the destinationto confirm this operation and wait for its completion.

select your country

To do so:

On Battle.net

Step 1.

In theGamestab, hitCall of Duty Modern Warfare 3.

In the lower left corner, hit thegear iconbeside thePlaybutton and selectScan and Repair.

On Steam

Step 1.

Launch theSteam clientand find the game inLibrary.

Right-hit the game and selectProperties.

In theInstalled Filestab, hitVerify integrity of game files.

Fix 3: Repair or Reset the Game

Step 1.

Typeappwiz.cpland hitEnterto openPrograms and Features.

In the app list, findCall of Duty Modern> hit thethree-doticon > selectAdvanced options.

Scroll down to findRepairunderResetand hit it.

Once done, relaunch the game to see if 0x00001338 (12488) N is gone.

Heres how to do it:

Step 1.

OpenWindows Settingsand go toUpdate & Security.

Heres how to do it:

Step 1.

Navigate to the following path:C:\Users\Username\AppData\Local\Packages\Microsoft.WindowsStore_8wekyb3d8bbwe

Step 3.

Find theLocalCachefolder and right-choose it to chooseDelete.

To do so:

Step 1.

PressWin+Ito openWindows Settingsand selectTime & Language.

In theDate & timesection, toggle onSet time automatically&Set time zone automaticallyand hitSync now.

Go to theRegionsection and select your country.

Which method do you prefer?