What causes error code 25509 in MW2?
A glitch with the network connection – In most cases, it’s the network cable that’s not properly plugged into the router/modem or broken that triggers the error. Problem with the console – If you are using a gaming console, it could be an issue with the device itself. VPN/Proxy interference – Sometimes, you may encounter the error code 25509 due to an active VPN or Proxy.
How do I fix error code 25509 in Modern Warfare 2?
Try some preliminary checks to see if one of them helps fix the error:
Restart the Xbox console. Check for Warzone game updates. One of the most common errors does not allow users to update the game and throws up not enough free space errors, yet you can fix them in no time.
If none of the above help, we have some proven workarounds to help you fix the error code 25509.
1. Reset your network hardware
Now that you successfully power cycled and reset the network hardware, you should not encounter the error anymore.
2. Reset the console keeping games and apps
Once done, you can now continue with your game without coming across the error code 25509 in MW2 anymore.
3. Turn off VPN and proxy
In case you encounter a proxy error, follow the troubleshooting methods in our detailed post to fix the proxy error in Windows 11. But, if you are using a third-party service like the Express VPN you can follow the method in our post (also applicable for Windows 11) to disable VPN temporarily or for good. If all of the above methods fail to fix the error code 25509 in MW2, you can try contacting Call of Duty support via chat, contact form, or over the phone. While it’s a new error code that has been bugging game lovers recently, these are some of the working solutions we found from different forums. If you found any other solution for the error code 25509, do let us know in the comments box below.
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