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Users playing Call of Duty World War 2 will encounter error code 4220 when they cannot access the online multiplayer game. This error message is a common error that can happen to anyone, despite certain conditions.

The error mainly indicates that the console cannot connect to the Internet, even if it has a working Internet connection and can play other multiplayer games. Fixing this error is quite easy. Make sure you follow the decisions from top to bottom.
What is the cause of error code 4220 COD WW2?
- COD servers are down or undergoing regular maintenance. In this case, you should not be excluded from multiplayer mode for more than an hour.
- Your game is in an error state. To fix this error status and fix the error, you can follow the steps below.
- You do not have an active Internet connection. In most cases, this error message appears when the game cannot connect to the previously mentioned online servers.
Power Cycle Console Device

Turn off the console, router, modem, and power supply completely for about 5 minutes to clear all faulty settings and update their status.
Check connection problems
Connection problems are a common cause of 4220 errors. So, you need to make sure that you are having problems with your Internet connection.
First, you need to disconnect from Wi-Fi and use a wired connection. Then you need to reset the MAC address [3] as follows:
- Open the Xbox Guide on the left side of the main screen.
- Select “Settings”, then “All settings”.
- Go to network settings, then go to additional settings.
- Select Alternate Mac Address, then select Delete.
- Restart the Xbox console as described in the first method.
- Una vez que se inicia la consola, apague el firewall del enrutador y vea si el error desaparece.
First of all, log in with Zombie

If restarting your device and the game doesn't help, try accessing Zombies. It looks stitched, but it seems that Zombies mode is different from other connection methods. This mysterious solution works for many users and you can try it.
- Start COD WW2.
- Sign in to Xbox Live. You may receive an error code, but don't worry, click on NATIONAL ZOMBES.
- Click MULTIMPLEER. You will return to the main menu.
- Select Xbox Live.
You must be able to play multiplayer mode.
Reinstall the game.
Delete and reinstall the game. You can easily overwrite data files. This solution may fix the error code.
- Pulse simultáneamente la tecla con el Logo de Windows y R en su teclado para mostrar la ventana «Ejecutar».
- Type appwiz.cpl and press Access on the keyboard.
- Delete Call of Duty: World War II (right-click on this game from the list and select “Delete”).
- Download the game from the place where you purchased it.
- Try playing CoD: WWII and see if it resolves the black screen issue.
Determine the correct NAT type

For Xbox, it is recommended to set the NAT type to "Open." Select “Settings” > “All Settings” > “Network” > “Check NAT Type” and make sure it is set to “Open.”
For PS4, the NAT type must be Type 1. Select “Settings” > “Network” > “Connection Status” > “Determine NAT Type 1”.
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