5. Allow the Game File to Windows Defender and Firewall
You can try whitelisting the Diablo 4 program in the Windows Firewall protection by following the steps below to fix multiplayer connectivity issues.
- Open the Start menu > Search for Control Panel and open it.
- Go to Systems and Security > Open Windows Firewall.
- Select Allow an app or feature through Windows Firewall.
- Now, click on Change settings > Select Allow another app.
- Select Browse > Click to select Diablo IV.
- Click on Add and make sure to save changes.
Additionally, you should allow the Diablo 4 game to Windows Defender antivirus by following the steps below to avoid blocking issues.
- Press the Win+I keys to open Windows Settings.
- Go to Privacy and Security > Click on Windows Security.
- Click on Virus and threat protection > Select Manage ransomware protection.
- Select Allow an app through Controlled folder access > Click Add an allowed app.
- Click on Browse all apps > Now, select Diablo IV.
- Then click on Open > Make sure to save changes.
6. Set the Date and Time Correctly
Multiple players did mention that configuring the date and time correctly helped them a lot to fix the Diablo IV Error Code 300008 Your Login Attempt Has Timed Out on the PC. So, you can also try this method because an incorrect date and time might affect the game’s server connectivity issue in most cases.
- Press the Win+I keys to open Windows Settings.
- Click on Time & Language > Click on Date & Time.
- Make sure that the Set time automatically should be turned off.
- Next, select the correct Time zone as per your country/city.
- Then Turn On the Set time automatically option again.
- Click on Sync now to check if the date and time show correctly.
- Otherwise, click on Additional clocks > Click on the Date and Time tab.
- Click on Change date and time > Go to Calendar settings.
- Set the date and time format > Click on Apply and then OK.
- Click on OK again and reboot the PC.
7. Check the Diablo IV Server Status
You should check the Diablo IV server status by visiting the @BlizzardCS Twitter handle or the Battle.net Support webpage to check for the issue. Alternatively, you can also visit the third-party DownDetector Diablo Status webpage to check the server issue. Currently, there are some Diablo IV launch issues and server-side issues present that can trouble a lot of players. So, wait for a couple of hours and then try again. Otherwise, you can try following other methods.
8. Disable Manual Proxy Setup
Keep in mind not to run Proxy Servers on your PC while playing multiplayer online games like Diablo IV because it increases the ping delay or latency which eventually triggers server connectivity errors. To do so:
- Press the Win+I keys to open Windows Settings.
- Click on Network & Internet > Click on Proxy.
- Make sure to Turn Off the Manual Proxy Setup option.
- You should also turn off the Automatically detect settings toggle.
9. Do a Network Reset
Another thing you should do is perform a network reset method on your PC by following the steps below to ensure there is no issue with the networking glitch.
- Press the Win+I keys to open Windows Settings.
- Click on Network & Internet > Go to Advanced network settings.
- Click on Network Reset > Click on Reset now.
- If prompted, confirm the process.
- Once done, reboot the PC, and then reconnect to the respective network again.
10. Try Switching to a Different Network
As we’ve already mentioned previously, if you’re using the wireless (Wi-Fi) network then make sure to use the wired (ethernet) LAN connection on your PC to get faster and more stable internet connectivity. Otherwise, try switching to a different network to temporarily check for the server connectivity issue.
11. Check for Diablo IV Updates
We should also recommend you check the game update manually via the Battle.net client to avoid potential glitches that can come with the outdated game version. An outdated game patch version mostly triggers bugs or stability issues like networking connectivity which can be fixed by following the steps below.
- Open the Battle.net launcher > Click on the Blizzard logo from the top left corner.
- Go to Settings > Click on Game Install/Update.
- Scroll down to the bottom > Click on Apply latest updates and download future patch data for recently played games to enable it.
- Next, click on Done to save changes > Restart the Battle.net launcher to apply changes.
- It’ll update the game to the available version automatically.
12. Verify and Repair the Game Files
Sometimes missing or corrupted game files might trigger several issues that can be frustrating enough with the game launching. You can follow the steps below to do so:
- Open the Battle.net client on your PC.
- Click on the Diablo IV game > Click on OPTIONS (Gear icon).
- Next, click on Scan and Repair > Click on Begin Scan.
- Wait for the verification process to complete.
- Once done, close the Battle.net launcher, and restart your PC.
13. Use Google DNS Server
It seems that somehow your specific DNS address is going through some blockage with the Diablo 4 game server. So, you should try using the public DNS address on the PC or router manually adding DNS server addresses.
- Press the Win+R keys to open the Run dialog box.
- Now, type ncpa.cpl and hit Enter to open Network Connections.
- Double-click on the Wi-Fi or Ethernet network from the list.
- Click on Properties > Double-click on Internet Protocol Version 4 (TCP/IPv4).
- Click to select Use the following DNS server addresses.
- Next, enter 8.8.8.8 for the Preferred DNS server and 8.8.4.4 for the Alternate DNS server.
- Once done, click on OK to save changes.
- Make sure to restart your computer to apply changes.
14. Update Windows
You should also check for the available Windows update on your computer because Microsoft keeps releasing a new security patch update or the cumulative feature update to the latest Windows OS version quite often. If in case, you haven’t updated your Windows system for a while then make sure to follow the steps below to do so. An outdated or corrupted system version may conflict with the game launching or connecting to the game servers.
- Press the Win+I keys to open Windows Settings.
- Next, click on Update & Security > Select Check for updates under the Windows Update section.
- If there is a feature update available, select Download and Install.
- It may take a while to complete the update.
- Once done, restart your computer to install the update.
That’s it, guys. We assume this guide was helpful to you. For further queries, you can comment below.
