My partner and I both play Diablo 4 on our PCs, in the same house on the same network. Sometimes one of us gets the disconnection error, sometimes the other gets it. We don’t ever both get it in the one session. If one of us starts getting disconnected, that person keeps having the same issue repeatedly. Then next time we try to play (eg, next day), it might switch to the other person having this issue. But never both of us in one session.
I also tried playing with my PC connected to the internet via my phone’s hotspot, and still had the same disconnection issue.
The disconnection comes up with this error message: “The game connection has been lost: your client has been disconnected from the server.” When you re-enter the game after that, often the top left of screen says “Reconnecting to Diablo 4” and it then disconnects again.
I have googled and read every online forum I can find on this and I see other people having the same problem, but can’t find a solution.
The support team at Blizzard asked us to reach out to our ISP to check if there’s anything on their end that can help. ISP suggested we opt out of CG-NAT, which we have now done (this didn’t help either).
The last support ticket response from Blizzard is copied below.
We have completed all their suggested steps to no avail. Nothing seems to help. Has anyone else successfully resolved this issue?
Support response from Blizzard:
"We understand how disruptive connection issues can be when trying to enjoy your Battle.net games, and we’re here to assist you in resolving these problems as efficiently as possible. Please follow the troubleshooting steps outlined below. If the issue persists, feel free to consult the Battle.net Game Forums or seek advice from a local technical expert for further assistance.
Known issues D4 Please read if you are playing this game: https:// support.Blizzard. Co m/artic le/000366777
Troubleshooting Steps:
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Check Firewall/Antivirus Settings:
Ensure that your firewall or antivirus software is not blocking Blizzard’s games or services. You may need to add exceptions for Blizzard’s executables or specific ports. For detailed instructions, visit our Firewall and Antivirus Configuration guide. https:// battle. n et/supp ort/en/article/000023672 -
Restart Your Computer and Router/Modem:
A simple restart of your networking equipment can often resolve connection issues. Please refer to this article for guidance: Restart Network Devices. https:// battle. n et/sup port/en/article/31851 -
Disable Background Applications:
Close any unnecessary background applications that may be interfering with Blizzard programs. Resource-intensive programs running in the background can cause performance issues. Learn more about managing background applications here: Managing Background Applications. https:// battle. Ne t/sup port/en/article/000023848 -
Flush DNS Cache and Reset Network Configuration:
Flushing your DNS cache and resetting your network configuration can help resolve potential conflicts. Instructions for this process can be found here: Network Configuration and DNS Cache. https:// battle. n et/sup port/en/article/82450
Console Users: For troubleshooting related to console games, please visit Console Support. https:// battle. n et/sup port/en/article/000035299
Call of Duty Games: For issues specifically with Modern Warfare or other Activision titles, please contact Activision Support. https:// support. Activision. C o m/
If you continue to experience issues after following these steps, we recommend visiting the Battle.net Forums, where our community and developers can provide additional insights or solutions.
Lastly, if none of the above steps resolve the issue, please contact your internet service provider to ensure there are no problems on their end affecting your connection."