Modern Warfare 3 Detrick Guernsey Error Code Fix (BETA)

If you are getting the Modern Warfare 3 Beta Detrick Guernsey Error Code, you are not alone! The MW3 beta is now officially live for those play on the PlayStation 4 and PlayStation 5, however, although not unexpected, it has arrived with a myriad of issues. For starters, some players can’t even enter the beta, despite having preordered the game. Namely, many are receiving the Connection Failed MW3 Beta Detrick Guernsey Error Code. Why are you receiving this and can it be fixed? Read on as we explain what we know.

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MW3 Beta Detrick Guernsey Error Code Fix
MW3 Beta Detrick Guernsey Error Code Fix

Can You Fix Modern Warfare 3 Beta Detrick Guernsey Error Code

The Connection Failed MW3 Beta Detrick Guernsey Error Code is not a new thing. Namely, Call of Duty veterans will recognize this pesky error as something appearing from time to time across many previous Call of Duty games. We are talking primarily about Modern Warfare (2019), Warzone 1 and Warzone 2, and Modern Warfare 2 (2022). And if you remember this error, you sadly know there’s not much way to fix it. Namely, in the vast majority of cases, the error has nothing to do with you. Your internet is most likely working fine, and your console or PC is in good condition. Hence, the issue lies on the Call of Duty servers. Whenever you get the “Detrick Guernsey” error, it means that the servers are either down due to overload or due to some errors.

In the case of MW3 beta, the issue is simply that the game has just launched, and the servers are still not perfectly stable. Thus, expect a lot of disconnections and network errors over the next couple of days. And that is about all there’s to say about this issue. If you are receiving the “MW3 Beta Detrick Guernsey” Error Code, and the game says “Connection Failed”, you will simply have to wait a bit. However, if you want to perform some troubleshooting, here’s what you can do:

How to fix Detrick Guernsey in MW3

We know that this is a piece of basic advice, but a speedy, steady, and uninterrupted Internet connection is a must for an always-online game such as Modern Warfare 3. Therefore, ensure your Internet is working correctly and without any interference. Check out other online games and see if they work without issues. If possible, always use an Ethernet cable instead of a WiFi network. Unstable WiFi networks are one of the main reasons behind high ping, lag and stuttering in Modern Warfare 3.

Reboot Your Network Device

In many cases, your Internet may run badly due to issues caused by your router or other network device. To prevent this, you should power cycle your router. To do this, follow these steps as listed below:

  • Turn off your router.
  • Unplug it from an electrical outlet.
  • Leave it unplugged for around 2 to 5 minutes.
  • Plug it back in and turn it on.

In addition, you may also perform a factory reset of the router to fix configuration errors and update your router firmware. Contact your Internet provider and router manufacturer for more information.

Port Forward Your Router for Modern Warfare 3

If you are having issues playing co-op with your friends, you might nee to do some port forwarding. Check out this guide for more details on how to do that.

Whitelist Modern Warfare 3 in Your Antivirus and Firewall Apps

Double-check if Modern Warfare 3 is whitelisted in your antivirus and firewall apps. The protection apps on your PC need to be sure that Call of Duty Modern Warfare 3 is a trusted app before allowing it to go online. Otherwise, it can interfere when the game tries to connect to the servers, which can result in Modern Warfare 3 Detrick Guernsey.

Release and Renew your IP & Flush your DNS

Our last resort asks for a bit more technical knowledge on your side, but it is often proven to be a great solution for connection issues. However, if you follow the process below, you might be able to fix Modern Warfare 3 Detrick Guernsey completely. Here’s what you need to do:

  1. While on the desktop, press Windows Key and type CMD.
  2. Right-click Command Prompt and select Run as administrator.
  3. Type ipconfig /release in the command prompt and press the Enter/Return key on your keyboard.
  4. Wait a few seconds for a reply that the IP address has been released.
  5. Type ipconfig /renew in the command prompt and press the Enter/Return key on your keyboard.
  6. Wait a few seconds for a reply that the IP address has been re-established.
  7. Type ipconfig /flushdns in the command prompt and press the Enter/Return key on your keyboard.
  8. Close the command prompt and attempt to make a connection.
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Author Chronocrator profile picture
Nikola was a senior editor and writer at Gosunoob.With over 12 (since 2012) years of experience in esports & gaming journalism, I like to think that my guides once helped a NASA scientist to beat a game. What I'm trying to say is that I should be credited for NASA's Mars missions. (I'm just kidding, please don't shoot me). In my free time, I dream of the day when I will finally start clearing my Steam backlog.

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