Fix Diablo 4 Error Code 3420 [Step by Step Guide]

Diablo IV is a popular action role-playing game by Blizzard Entertainment. However, it’s not without its bugs, and many players have faced the servers not available error 34202. Don’t worry, though! This guide will help you fix that pesky error.

Let’s dive right into the steps you can take to fix the Diablo 4 servers not available error 34202.

Steps to Fix Diablo 4 Error Code 34202

Verify Diablo IV Server Status

First things first, head over to DownDetector Diablo Status to see if the game servers are up and running. If there’s a server issue, you might have to wait it out or try the other steps below.

Test Your Internet Connection

Make sure your internet connection is stable and fast enough for gaming. You can try switching between wired and wireless connections or test out a different network to see if that solves the problem.

Reboot Your Wi-Fi Router

If you think the issue lies with your Wi-Fi router, give it a reboot by turning it off, unplugging it, waiting for 30 seconds, and then plugging it back in. This might help with any connectivity issues.

Update Diablo IV

An outdated game version could be causing the problem. Open the launcher, go to Settings, click on Game Install/Update, then click on Apply latest updates and download future patch data for recently played games option. Restart the launcher to apply changes, and the game should update to the latest version.

Repair Game Files

Corrupted or missing game files can cause issues. Open the client, click on Diablo IV, select Options (Gear icon), and choose Scan and Repair. Begin scan and wait for the process to complete, close the launcher, and restart your PC.

Close Unnecessary Background Tasks

Close any unnecessary third-party tasks running in the background. Press Ctrl+Shift+Esc to open Task Manager, click on Processes, select a task, and click on End Task. Repeat for other tasks, close Task Manager, and reboot your PC.

Flush DNS Cache

Flushing the DNS cache can help with internet configuration issues. Open the Start menu, search for Command Prompt, right-click on it, and choose Run as administrator. Type “ipconfig /flushdns” and press Enter. Restart your PC after receiving the success message.

Disable VPNs or Proxy Servers

Avoid using VPN or Proxy servers when launching Diablo IV, as they can cause connectivity issues. While VPNs can help access game servers, they may also lead to disconnections, timeouts, and queue errors due to higher latency.

Update Network Drivers

Outdated network drivers can cause connectivity problems. To update them, right-click on the Start Menu, click on Device Manager, double-click on Network adapters, right-click on the networking device, and choose Update driver. Select “Search automatically for drivers” and reboot your PC once the update is done.

If no updates are available, visit the network card manufacturer’s website, download the latest driver for your model, install it, and restart your PC.

Change In-Game Settings

In some cases, adjusting in-game settings can help improve server connectivity. To do this:

1. Open the client

2. Click on Diablo IV and select Options (Gear icon).

3. Navigate to the Network or Connection settings.

4. Adjust the settings as needed, such as changing the region or lowering the network bandwidth limit.

5. Save your changes and restart the game to see if the error is resolved.

Configure Port Forwarding

1. Port forwarding can help improve your connection to Diablo IV servers. To set this up:

2. Find your router’s IP address and log in to its admin panel.

3. Locate the Port Forwarding or Virtual Servers section.

4. Add a new rule for Diablo IV with the following ports:

TCP: 80, 443, 1119
UDP: 1119, 6120

5. Specify your computer’s IP address as the destination for the forwarded ports.

6. Save your changes and restart both your router and computer.

Remember that the exact steps for port forwarding might vary depending on your router’s make and model. You can find specific instructions for your router on the manufacturer’s website or in its user manual.

Configure Firewall and Antivirus

Sometimes, your firewall or antivirus may block Diablo IV from connecting to servers. To resolve this issue:

1. Open your firewall or antivirus software settings.

2. Add Diablo IV and to the list of allowed programs.

3. Save your changes and restart your computer.

That’s it! By implementing these steps, you should be well equipped to fix the Diablo 4 server error 34202. Good luck, and enjoy playing!