Fix Modern Warfare 2 MW2 Error Code 14515

Call of Duty: Modern Warfare II is a 2022 first-person shooter video game that literally brings back the iconic operators of Task Force 141. Though Infinity Ward and Activision have done a tremendous job with this title along with the free-to-play Warzone 2.0 online battle royale game, it seems that several players are experiencing a lot of issues and error codes during startups. Meanwhile, multiple players are getting the MW2 Error Code 14515 while launching the game on all platforms.

Well, error codes or crashes have become a common thing among all multiplayer games, especially with the Call of Duty franchise. Luckily, it seems that the specific Error code 14515 in Modern Warfare 2 is a server-side issue and there is no permanent solution available yet. Whenever the active number of players gets overloaded, the Activision servers become unresponsive during peak hours. It basically says “Failed to start matchmaking, please retry the operation. Error code: 14515.” So, you can try waiting for a couple of hours and then try again to get into the game.

Fix Modern Warfare 2 MW2 Error Code 14515

Fix Modern Warfare 2 MW2 Error Code 14515

Now, if you’re also one of the victims to encounter the same error then don’t worry. Fortunately, here we’ve shared with you a couple of workarounds that should come in handy. So, without further ado, let’s jump into it.

1. Restart the Gaming Device

Before going into any other workaround, it’s recommended to simply restart your gaming device to ensure there is no temporary system glitch or cache data issue. A normal reboot of the system mostly fixes several issues whatsoever.

2. Run MW2 as an Administrator

Ensure to run the Modern Warfare II application as an administrator on the PC by following the steps below to ensure there is no conflict with the system permissions while running the game.

  • Go to the installed game directory on the PC.
  • Right-click on the COD MWII.exe application file.
  • Click on Properties > Click on the Compatibility tab.

  • Click on the Run this program as an administrator checkbox to enable it.
  • Once done, click on Apply and then OK to save changes.

3. Update the Modern Warfare II

It’s always recommended to check for the Call of Duty Modern Warfare II game update on your PC manually by following the steps below. An outdated game patch version might trigger several issues with the game launching or server connectivity in most cases.

  • Open the client.
  • Select Modern Warfare II from the library.
  • Click on the cog wheel icon next to the game.
  • Click on Check for Updates.
  • If an update is available, just download and install it.


  • Open the Steam client > Go to Library.
  • Right-click on Modern Warfare II > Select Properties.
  • Click on Updates > From Automatic Updates, select Only update this game when I launch it.
  • Now, launch Modern Warfare II > Wait for it to download whenever available.
  • Go back to the Updates section and select High Priority – Always auto-update this game before others (if you want).

For PlayStation:

  • Turn On your PS4/PS5 console > Go to the Home screen.
  • Now, navigate to the main menu on top.
  • Head over to the Games tab.
  • Select Call of Duty: MWII to highlight it.
  • Press the Options button on your controller.
  • Finally, choose Check for Update from the drop-down menu.

For Xbox:

  • Turn On your Xbox One or Xbox Series X|S gaming console.
  • Press the Xbox button on your controller to open the menu.
  • Now, scroll down to the right > Select Settings.
  • Scroll down until you see Updates & downloads.
  • From the next page, select Keep my console up to date and Keep my games & games up to date to enable the checkbox.

4. Verify and Repair the Game Files

Sometimes corrupted or missing game files on the PC might also trouble you while starting the game or conflict with the server connectivity. It’s always better to verify and repair the game files by following the steps below on your PC to avoid errors.

  • Open > Click on Modern Warfare II.
  • Select the Cog Wheel icon next to the Play button.
  • Now, select Scan and Repair > Wait for the repair to complete.


  • Open Steam > Go to Library.
  • Right-click on Modern Warfare II in your library.
  • Go to Settings and select Properties.
  • Click on Local Files and select Verify integrity of game files.
  • Wait for the process to complete.

5. Check Your Internet Connection

You can also check the internet connection at your end whether it’s working fine or not. A slow or unstable network connectivity can trigger several issues with the matchmaking or server connectivity. In some cases, too many devices are connected to the same network which can also reduce the data speed. If you’re using Wi-Fi, try using an ethernet connection for better stability. Otherwise, try using a different connection instead.

6. Power Cycle the Wi-Fi Router

We’ll also recommend you perform a power cycle to your Wi-Fi router by following the steps below to easily clear networking glitches or temporary cache issues.

  • Just Power Off the Wi-Fi router.
  • Once the LED indicator stops blinking, unplug the power cable from the power source.
  • Now, wait for around 30 seconds, and then plug back the power cable in.
  • Then Power On the router and check for the issue again.

7. Disable Windows Firewall

Windows Firewall basically prevents unauthorized ongoing connections from the PC to online servers. You can try turning it off temporarily to check for the issue again.

  • Open the Start Menu > Type Windows Firewall and click on Windows Defender Firewall from the search result.


  • Now, click on Turn Windows Defender Firewall on or off from the left pane.

  • Make sure to turn off all the Private, Domain, and Public Network Settings options.
  • Finally, click on OK to save changes.

8. Temporarily Turn Off Antivirus

You can also try turning off the Windows Defender antivirus protection on your PC to ensure there is no antivirus software blocking the game files from running properly.

  • Press the Win+I keys to open Windows Settings.
  • Click on Update & Security > Click on Windows Security from the left pane.
  • Now, click on the Open Windows Security button.
  • Go to Virus & Threat Protection > Click on Manage Settings.
  • Next, you’ll need to Turn Off the Real-time Protection toggle.
  • If prompted, click on Yes to proceed further.

In case, you’re using any other third-party antivirus program on your PC then just turn off the real-time protection feature.

9. Check the Activision Online Services

Last but not least, make sure to check for Activision Online Services here to ensure there is an issue with the server downtime or outage. Sometimes the server unavailability or downtime can trigger several issues for the players. If the online status seems active or operational for all platforms then nothing to worry about. Keep retrying at your end. But if the online status seems problematic then wait for a couple of hours and try again. Visit the page and select Call of Duty: Modern Warfare II from the drop-down menu.

In conclusion, while encountering the MW2 Error Code 14515 can be frustrating for players eager to dive into the game, it’s essential to understand that such issues, especially within the Call of Duty franchise, are not uncommon. The current indications suggest a server-side bottleneck during high-traffic periods. Patience is key; waiting for off-peak hours may offer a smoother gaming experience. That’s it, guys. We assume this guide was helpful to you. For further queries, you can comment below.

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