Diablo 4 error 401003 code: How to Fix?

Murat OktayJune 29, 2023

0 98 3 minutes read

If you are experiencing network disconnection errors in Diablo 4, you can get Diablo 4 error 401003 code. It typically indicates an issue with the game’s servers.

While server connection issues can be frustrating, they are not uncommon in online games like Diablo 4. By following the troubleshooting steps outlined in this article, you can address most of the common issues and improve your chances of reconnecting to the game servers successfully.

Remember to check server status, ensure a stable internet connection, review firewall settings, and keep the game updated. Should all else fail, don’t hesitate to seek assistance from customer support. With perseverance and patience, you’ll soon be back in the demonic battles of Diablo 4, fully connected and ready to conquer the challenges that lie ahead.

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Diablo 4 error 401003 code: The Infamous Disconnection

Error code 401003 is one of the most prevalent server connection issues in Diablo 4. This error typically occurs when there are problems with the game’s servers or issues with the player’s internet connection. It can be frustrating, but there are several steps you can take to address this problem.

To solve this problem, we have a few steps and suggestions that you should follow. If the problem is not caused by the server, you can fix the problem by following the steps below:

Check server status

Before troubleshooting the issue, make sure to check the official Diablo 4 website or forums to see if there are any known server issues or maintenance periods. If the servers are down, you will need to wait until they are back online.

Check your internet connection

Ensure that you have a stable internet connection by testing it with other online services or websites. If your connection is unstable, try restarting your modem/router or contact your Internet Service Provider (ISP) for assistance.

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Disable VPN or Proxy

If you are using a VPN (Virtual Private Network) or proxy service, try disabling it temporarily. Some VPNs or proxies can interfere with the game’s connectivity and cause error 401003.

Firewall and antivirus settings

Check your firewall and antivirus settings to ensure that Diablo 4 has the necessary permissions to access the internet. Add Diablo 4 to the exceptions or whitelist list to prevent any potential blockages.

Restart the game and launcher
Close Diablo 4 and the Blizzard launcher completely. Then, relaunch the game and see if the error persists. Sometimes, a simple restart can resolve temporary connection issues.

Clear cache and temporary files

Delete any temporary files and cache related to Diablo 4. These files can sometimes become corrupted and cause connectivity problems. You can usually find these files in the game’s installation directory or in the Blizzard launcher’s settings.

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Update the game

Ensure that you have the latest version of Diablo 4 installed. Developers often release patches and updates to address known issues and improve stability. Check for any available updates and install them if necessary.

Contact customer support

If the error persists after trying the above steps, it’s recommended to contact Blizzard’s customer support for further assistance. Provide them with details about the error code and any troubleshooting steps you have already taken. They may be able to provide additional guidance or investigate the issue further.

Diablo 4 error 401003 code is often related to server or connectivity problems, so it’s important to ensure a stable internet connection and rule out any temporary server issues before troubleshooting further.