Though Call of Duty: Modern Warfare states so, yet the old-time disc read error 3.1 is still not resolved. It is displayed when you open the game because the game file is unable to read the contents of the file. Are you getting the same pop-up? Worry not! We have provided all the possible solutions in this guide.
How to Fix Call of Duty Modern Warfare Disc Read Error 3.1
The major reasons as to what causes disc read error 3.1 are listed below:
- Corrupt game File
- Outdated OS
- Interference from other software
- Malfunctioning game disc
Quick Answer
Call of Duty Modern Warfare disc read error 3.1 refers to the game having trouble reading data from the game disc so it is best to:
1. Clean the game disc.
2. Keep game files updated.
3. Clear game cache.
Method 1: Basic Troubleshooting PC Methods
If the error occurs due to some glitches or issues, it may be resolved by updating graphics driver on Windows PC and updating Windows OS.
Method 2: Restart Game After Clearing Cache
By restarting the game, you can re-download some portions of the game files that are not properly installed and fix Modern Warfare disc read error 3.1.
1. Open Windows Explorer using the Windows+ E keys at once.
2. Navigate to C:\Call of Duty Modern Warfare\main
3. Press the Ctrl key and select the files with the .bak extension and the following cache files.
- data0.dcache
- data1.dcache
- toc0.dcache
- toc1.dcache
4. Press the Delete key to delete the selected files.
5. Move to the following location path as given below.
C:\Users\Lenov0\Documents\Call of Duty Modern Warfare\players
6. Select the following cache files mentioned below by following the instruction given earlier.
- adv_options.ini
- ppsod.dat
7. Delete these files as well as said earlier.
8. Open Desktop using Windows + D keys simultaneously and open the Battle.net game app.
9. Start the COD MW game and see if the error persists.
Also Read: Fix Call of Duty MW3 Disc Read Error
Method 3: Alter Build File
We can try altering the build file of the game to reconfigure the data of the game file to fix this error.
1. Open File Explorer using the Windows+ E keys together.
2. Navigate to the following location as shown below.
C:\Users\Lenov0\Documents\Call of Duty Modern Warfare
3. Right-click on the .build.info file and click on the Rename option.
4. Alter the file name to .build.info.bak and press the Enter key.
5. Click on the Yes button on the confirmation screen to alter the file name and launch the game.
Method 4: Scan and Repair Files
If the installation of the files is incomplete or if there is some unidentified issue that is causing the Call of Duty Modern Warfare disc read error 3.1, you can repair the game file. Using the built-in repair tool, you can reconfigure the game files and add them to the app.
1. Open the Blizzard Battle.net client on your PC.
2. On the left pane, click on the Call of Duty: MW game in the PARTNER GAMES section.
3. Click on the Options drop-down menu on the right pane and click on the Show in Explorer option.
4. Select all the files except the folders and press the Delete key to delete them.
5. Return to the Battle.net client, click on the Options menu as said, and click on the Scan and Repair option.
6. On the confirmation window, click on the Begin Scan button.
7. Wait till the repair of the file is complete and then relaunch the game.
Also Read: Fix Blizzard Battle.NET Error Code 2
Method 5: Disable Sonic Studio Virtual Mixer
Sonic Studio Virtual Mixer is an audio suite with high-end ASUS motherboards. The interference from this software on the game may cause the error, and disabling its activity may fix this error.
1. Open the Run dialog box using the Windows + R keys simultaneously.
2. In the field, type mmsys.cpl and click on the OK button.
3. In the Playback tab, right-click on the Sonic Studio Virtual Mixer device and click on the Disable option.
4. Restart the Modern Warfare game on the app as said earlier.
Method 6: Disable Game Overlays
If the interference from other game apps is causing the error, you can try disabling them to fix MW disc read error 3.1. Disabling these overlays can help clear triggering the error on the game.
Option I: On Origin
Origin in-game overlay can be a major impending factor in the effective functioning of the game. You can disable the Origin game overlay as follows to fix it.
1. Open the Origin app using the search bar.
2. Sign in to your EA account using the account credentials.
3. Click on the Origin tab at the top bar and click on the Application Settings option in the menu.
4. Move to the ORIGIN IN-GAME tab and toggle off the Enable Origin in-Game setting.
Option II: On Steam
Steam app overlay may interfere with the gaming experience and the Call of Duty Modern Warfare disc read error 3.1 would occur; you can disable the Steam overlay using the link given here.
Option III: On Discord
Discord is an online streaming platform and the overlay setting on the app may interfere with the game. Follow the instructions in the link to disable the Discord overlay and you may be able to resolve the question of why do I keep getting the Modern Warfare disc read error 3.1.
Option IV: On NVIDIA GeForce Experience
Though the NVIDIA GPU is used to enhance the display quality and user experience, the interference from the software may cause the Call of Duty Modern Warfare disc read error 3.1. You can disable the NVIDIA GeForce Experience as said in the article.
Then, restart your PC by following the instructions in the link given here.
Also Read: Fix NVIDIA Overlay Not Working on Windows 10
Method 7: Disable Security Software
As stated as a reason for the error in what causes disc read error 3.1 section, the interference from the security software may be the major cause. You can try disabling the firewall or try disabling the anti-virus app to resolve this error.
Method 8: Reinstall Battle.net Game
If none of the methods helps in fixing the error, you can try reinstalling the Battle.net app on your PC. This would clear all the issues and lag on your PC and help in the fresh installation of the game.
Step I: Uninstall Battle.net App
Follow the instructions in the link given to uninstall the Battle.net app from your PC. At the confirmation screen, click on the Yes, Uninstall button to complete the uninstallation.
Step II: Reinstall Battle.net App
The final step is to reinstall the Battle.net app using your web browser and then play the game.
1. Use the search bar to open the Google Chrome app.
2. Open the download website of the Battle.net app and then click on the Download for Windows button.
3. Run the downloaded Battle.net-setup.exe file at the bottom-left corner of the page.
4. As a preferred language, choose the English (US) option and click on the Continue button.
5. You can alter the location of the installation file using the Change option and then click on the Continue button.
6. Type the user credentials and click on the Log In button.
7. Launch the Battle.net app from the Desktop as said earlier and open the COD MW game.
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You have learned the methods to fix the Call of Duty Modern Warfare disc read error 3.1 in this article. It would be of immense help if you can share your suggestions and queries in the comments section.
