Fix: COD Vanguard Duhok-Guernsey – Not Signed in to a Profile

COD Vanguard Duhok-Guernsey

What is Duhok Guernsey? What does Duhok Guernsey mean? The full error message is Vanguard Error Code Duhok-Guernsey – Not signed in to a profile. It is a connection issue that occurs when you try to verify your COD Vanguard account.

The reason Duhok Guernsey issue is not caused by the Internet or server failure. But that’s not to say that connection issues on your end might not be causing the error. The main cause of this connection error is the introduction of Ranked Games in COD. Besides, when you try to access any part of Vanguard of Warzone, the issue can also appear.

Fixed - Call of Duty (COD) Vanguard DUHOK - LESTER on PlayStation

How to fix the COD Vanguard DUHOK – LESTER error code on PlayStation? This post provides a guide with one-by-one steps for you to remove the error code.

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How to Fix Duhok Guernsey

How to fix Duhok Guernsey? There are 5 methods available.

1. Restart PC/Console/Router

To fix the Duhok-Guernsey issue, you should restart your PC or console and launch the game again. Besides, you can also restart your router. To do that, turn off both devices, unplug the power cord, hold down the power button for 10 seconds, reconnect the power cord, and boot normally.

2. Change the DNS Server

Changing the DNS server can also help you to remove the Vanguard Duhok Guernsey issue. The solution can be applied to PC, PS5, and Xbox. Follow the guide below:

PC

1. Open Settings by pressing the Windows + I keys.
2. Go to Network & Internet > Ethernet > Change adapter options.
3. Select the network and right-click it to choose Properties. Click Internet Protocol Version 4 (TCP/IPv4) > Properties.
4. Toggle Use the following DNS server addresses and fill in the Google DNS 8.8.8.8 and 8.8.4.4.

PS5

1. Go to Settings > Network > Settings.
2. Set Up Internet Connection > Set Up Manually > Wi-Fi or LAN.
3. Under DNS Settings > Enter Primary DNS as 8.8.8.8 > Enter Secondary DNS as 8.8.4.4.

Xbox

1. Press the Guide button > All Settings > Network > Network settings.
2. Go to Advanced settings > DNS Settings > Manual.
3. Input the Google DNS addresses 8.8.8.8 and 8.8.4.4 in both the primary and secondary fields and restart the console.

3. Change the MTU Settings (PS5)

You may not have the correct settings or values ​​and this will cause speed issues with the game. Thus, you can change the MTU settings on PS5. Here is how to do that:

Step 1: Open Settings on your console. Then, select the Network settings.

Step 2: Go to the Settings menu, and select the Set Up Internet Connection button.

Step 3: Choose the Internet connection you want and select the MTU Settings option.

Step 4: Set the value to 1473.

4. Try Different ISP

You can try to play COD Vanguard through a different ISP than the original ISP. If you have stable mobile Internet with fast speeds, you can try to play the game over a hotspot.

5. Reinstall COD Vanguard

If the above solutions are not working for you. You can try to reinstall COD Vanguard. To do that, you just need to go to Control Panel to uninstall it. Then, go to its official website to download and install it again. Then, check if the Duhok Guernsey issue has gone.

Final Words

To sum up, this post has shown 5 solutions to Duhok-Guernsey Vanguard issue. If you have any better solutions to fix it, you can share them in the comment zone.