Dev Error 5479 MW2 – (How To Fix) (Complete Guide!)

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Do you want to solve COD Dev Error 5479 MW2? So you reached the right spot. Here in this post, you will get the complete guide on how to fix the Dev error 5479 in COD Modern Warfare 2.

According to recent reports, COD Modern Warfare 2 is not performing particularly well. Apart from gameplay and overall game experience, gamers around the globe have a new problem, MW2 suddenly crashes, and right after that, error code 5479 shows up.

Now without further delay let’s start how to fix the Dev Error 5479 MW2 guide.

About Dev Error 5479 MW2

Dev Error 5479 MW2

Being an online multiplayer game, Call Of Duty Modern Warfare 2 has many issues, bugs, and errors. One of these issues is Dev Error 5479. You will be notified with an error message – The application has unexpectedly stopped working in MW2.

You will get this issue as you join or connect in a multiplayer match in the game. Now, it can be frustrating and annoying to encounter such an error. Do not worry, we have provided some potential workarounds to resolve this issue. So, check out our below on how to fix Dev Error 5479 in MW2.

How to Fix The Dev Error 5479 MW2

Dev Error 5479 MW2

You can see the Dev error 5479 in between the multiplayer match in MW2. As mentioned, we have provided some best ways to resolve this MW2 Dev Error 5479:

Restart Your Console Or PC

Before trying any of the below methods, we recommend restarting your console or PC. You have to exit the game and restart your system.

This approach worked out for many gamers who faced this issue. While for some gamers it took a single restart, for some it required a couple of restarts.

Check out our next solutions if this method did not work out for you to solve Dev Error 5479 MW2.

Disable Overlays

Multiple pre-installed and installed Overlays can conflict with or conflict with MW2. The different Overlays such as Discord, AMD Relieve, Razer Synapse, and Steam could be a reason for this Dev error 5479 in MW2. So, be sure to disable them before you launch Modern Warfare 2.

Clear Out Background Applications

You can try clearing out software or apps taking up a large part of your system memory. Moreover, clear out apps taking up a lot of your Internet.

For example, Chrome can hog your Memory (RAM) and Bandwith. Some background programs also can interfere with your running game MW2.

Clear Out Background Applications

You can simply click on the CTRL + Alt + Del shortcut to open the Task Manager. Then, you have to click on the End Task option to clear out the unwanted software or apps.

Additionally, we recommend using Ethernet rather than Wireless Connection for a seamless and stable connection.

Disable Windows Firewall Or Anti-Virus

While these programs protect you from malicious content or malware, they can also interfere with the running MW2 game.

You can disable the installed Windows Firewall and Antivirus program temporarily. Then, again launch Modern Warfare 2 to check if you are still seeing the Dev error code 5479.

Turn Off Controlled Folder Access

This is a solution suggested by several gamers in the COD community, follow the below steps:

  • Head over to Windows Security and click on the CTRL + I shortcut button to launch Windows Settings
  • Then select the Privacy and Security option found on the left pane and select Threat & Virus protection
  • Next, choose the Manage Ransomware protection option
  • In case the option for Controlled folder access is switched on then toggle the option to turn it off.

Reinstall COD MW2

If none of the methods described above did not work out so we suggest reinstalling the COD MW2 game. Even though this can be actually time-consuming, it might solve the error. So, uninstall the COD MW2 game and then reinstall it. At last, launch the COD MW2 game to check if the error has been fixed.

In addition, we suggest submitting a ticket to Activision Support if reinstalling the WM2 game did not actually work out. You must describe and state the problems encountered in the crashing error 5479. Therefore, they will contact you soon regarding Dev Error 5479 MW2.


Hopefully, you like this Dev Error 5479 MW2 guide. In this post, we covered the complete guide on how to fix the Dev error 5479 in COD Modern Warfare 2.

If you want to ask any questions or share any feedback about the Dev Error 5479 MW2 so comment section is always open for you.

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