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MW3 Error Code 112: How to Fix ‘Failed to Start Matchmaking’ Issue

Struggling with MW3 error code 112 and ‘Failed to start matchmaking’ issues? Discover effective solutions to fix this Modern Warfare 3 error, enhance your gaming experience, and resolve MW3 matchmaking problems quickly. Get back to online battles with our comprehensive troubleshooting guide.

How To Fix Error Code 112 in Modern Warfare 3

Modern Warfare 3 (MW3) is a beloved game in the Call of Duty series, but like any popular game, it’s not without its issues. One frustrating problem that players frequently encounter is MW3 error code 112. This error usually appears with a message saying “Failed to start matchmaking.” If you’re facing this issue, don’t worry. In this post, we’ll explore the causes and provide several solutions to get you back in the game. Fixing MW3 error code 112 and solving MW3 matchmaking problems can be straightforward with the right steps.

What is MW3 Error Code 112?

Interestingly, error code 112 in Modern Warfare 3 indicates a matchmaking issue. When this error occurs, players are unable to join online matches, which can be incredibly frustrating, especially for those eager to jump into multiplayer battles. This problem is often related to the game’s ability to connect to the server or network issues.

Common Causes of MW3 Error Code 112

Importantly, understanding the root causes of this error can help in effectively troubleshooting it. Here are some common reasons why you might see error code 112:

  1. Server Issues: Sometimes, the game servers are down for maintenance or experiencing high traffic, causing MW3 server connection problems.
  2. Network Connectivity Problems: Poor internet connection or issues with your network settings can prevent matchmaking.
  3. Firewall or Antivirus Interference: Security software might block the game from connecting to the servers.
  4. Outdated Game Version: Running an older version of MW3 can cause compatibility issues with the servers.
  5. Corrupted Game Files: Damaged or missing game files can lead to various errors, including error code 112.

How to Fix MW3 Error Code 112

1. Check Server Status

Firstly, before diving into more complex fixes, ensure that the MW3 servers are up and running. Visit the official Call of Duty or Activision support page to check for any server outages or maintenance notifications. Checking MW3 server status is crucial before proceeding with other steps.

2. Restart Your Game and System

However, sometimes, a simple restart can resolve temporary glitches. Close MW3, reboot your system, and try launching the game again. This can often fix MW3 matchmaking issues.

3. Verify Your Internet Connection

A stable internet connection is crucial for online gaming. Here’s how to ensure your connection is up to the task:

  • Restart your router: Unplug your router, wait for 30 seconds, and plug it back in. This can help with MW3 connectivity issues.
  • Use a wired connection: Ethernet connections are more stable than Wi-Fi, enhancing MW3 online play.
  • Check your speed: Run a speed test to ensure you have sufficient bandwidth.
Modern Warfare 3 Error 112

4. Update Your Game

Additionally, ensure that you have the latest version of MW3. Updates often contain bug fixes and improvements. Check for updates in your game client and install any available patches. Keeping MW3 updated can resolve many errors, including error code 112.

5. Adjust Firewall and Antivirus Settings

Your firewall or antivirus software might be blocking MW3. Add the game to the exceptions list to allow it through:

  • Windows Firewall: Go to Control Panel > System and Security > Windows Defender Firewall > Allow an app or feature through Windows Defender Firewall.
  • Antivirus: Refer to your antivirus software’s guide to add an exception for MW3. Properly configuring your firewall for MW3 is essential to prevent blocking.

6. Verify Game Files

If the game files are corrupted or missing, you can verify and repair them:

  • Steam: Go to your Library, right-click on MW3, select Properties > Local Files > Verify Integrity of Game Files. This helps in fixing corrupted MW3 files.
  • Other Platforms: Follow the respective steps for the platform you are using.

7. Reinstall the Game

Finally, as a last resort, you can try reinstalling MW3. Uninstall the game completely, then download and install it again. This can fix deeper issues with the game files and resolve persistent MW3 errors.


Ultimately, dealing with MW3 error code 112 and the ‘Failed to start matchmaking’ issue can be frustrating, but with these steps, you should be able to resolve the problem and get back to enjoying Modern Warfare 3. Remember to keep your game updated, maintain a stable internet connection, and ensure your firewall or antivirus settings are properly configured. If the issue persists, reaching out to Activision support might be necessary for further assistance.

Happy gaming!

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