How To Fix Diablo 3 Error Codes 1016 And 3006

The daunting error can be fixed by disabling Windows Firewall, resetting IP address, and more.

Just like most video games out there, Diablo 3 is also filled with bugs and glitches. Although its developers have tried their best to fix as many as possible, players still encounter new issues every day. These bugs cause different errors to appear, including Diablo 3 error codes 1016 and 3006. These error codes are linked to network issues, and there are a handful of fixes that you can try. 

Key Takeaways
  • The Diablo 3 error codes 1016 and 3006 are caused due to multiple reasons, but they mostly occur due to network issues.
  • The error codes can be fixed by power cycling the internet router, disabling IPv6 and Windows Firewall, launching the game in compatibility mode for Windows 7, resetting the IP address, and repairing the game files.
  • If nothing works, you need to reinstall the game to fix the issue. 

How To Fix Diablo 3 Error Codes 1016 And 3006

Following are the methods which can help you fix the daunting errors.

Power Cycle Your Router

The error codes are often linked to network issues, so you need to power cycle your router. This is different from a regular restart and requires some extra steps.

  1. First, turn off your internet router by pressing the power button. This can be found at the back of the router.
  2. Then, remove the power cable from the router and the power outlet. 
  3. Wait for around 60 seconds, and then plug in the cable. 
  4. Now, turn on your router and try playing Diablo 3 again.

Try Disabling Internet Protocol Version 6 (IPv6)

A lot of you might not know this, but Diablo 3 often faces compatibility issues with IPv6. Therefore, you need to disable it, as it can sometimes fix the issue. 

  1. Open the Control Panel on your PC. This can be done by typing its name in the Windows Search Bar and selecting the first option that appears.
  2. Now, click on ‘Network and Internet‘ settings.
  3. Select ‘Network and Sharing Center.’
  4. From the list of options on the left side, click on ‘Change Adapter Settings.’ 
    Network and Sharing – Image Credits [eXputer]
  5. Right-click on your network device, and select ‘Properties.’
  6. Now, scroll down the list of options, and uncheck the box next to ‘Internet Protocol Version 6 (TCP/IPv6).’
    Disable IPv6 – Image Credits [eXputer]
  7. Click ‘Ok.’

Try playing Diablo 3 after making the changes to see if the error has been fixed. We recommend that you restart your system after disabling the IPv6.

Reset Your IP Address

If there is something wrong with your IP address, Diablo 3 will continue to give out the error code 1016 and 3006. In such cases, your only option is to reset your IP address. Don’t worry; while this may sound complicated, it isn’t.

  1. Open the Command Prompt on your PC. To do this, search its name in the Windows Search Bar and click on the first option that will appear.
  2. Alternatively, you can press the Windows + R key and enter ‘cmd‘ in the Run window. 
    Command Prompt
    Command Prompt – Image Credits [eXputer]
  3. In the Command Prompt, you need to enter the following commands. Make sure that you press enter after writing each command.
  4. When done, close the Command Prompt and launch Diablo 3 again.

Repair The Game Files

Sometimes, the error is caused due to corrupt game files. If this is the case, you need to repair them. Thankfully, the app allows you to do this quickly.

  1. Launch the app on your PC and log in to your account.
  2. Navigate to the Games Tab and find Diablo 3.
  3. Go to its options by clicking on the Gear icon.
  4. Click on the ‘Scan and Repair‘ option.
    Scan and Repair
    Scan and Repair option – Image Credits [eXputer]
  5. Wait for the process to finish; it usually takes a few minutes.

When done, launch Diablo 3 again. Hopefully, the error will be fixed this time.

Disable Windows Firewall

It is recommended to always keep the Windows Firewall up and running to prevent malware and viruses from entering your system. However, the Firewall can sometimes start causing network issues. Therefore, you can try disabling the Windows Firewall to see if it solves the error codes.

  1. Type ‘Windows Defender Firewall‘ in the Windows Search Bar and open it.
  2. Click on ‘Turn Windows Defender Firewall on or off,’ which can be found on the left side.
    Windows Firewall
    Windows Firewall Settings – Image Credits [eXputer]
  3. Now, turn off the Windows Defender Firewall for both Private and Public networks.
    Turn Off Firewall
    Turn Off Firewall – Image Credits [eXputer]
  4. Once done, launch Diablo 3 again.

Regardless of whether the error has been solved or not, it is recommended to go back to the Windows Defender Firewall settings and turn it back on. The longer you keep it turned off, the greater the risk is going to be. 

Run The Game In Compatibility Mode For Windows 7

Compatibility issues can also cause Diablo 3 error codes 1016 and 3006. If you’re playing the game on Windows 10, the game might demand a different OS. Don’t worry; you don’t have to install an older version of Windows. Instead, follow the steps mentioned below.

  1. Open the folder where you installed Diablo 3. If you can’t find it, right-click on its desktop icon and select ‘Open file location.’
  2. Now, find the ‘Diablo.exe‘ file.
  3. Right-click on it and select ‘Properties.’
  4. Now, go to the Compatibility tab and click on the box next to ‘Run this program in compatibility mode for:”
  5. Click on the drown-down menu to expand it, and select Windows 7.
    Compatibility Mode
    Compatibility Mode for Windows 7 – Image Credits [eXputer]
  6. Enable the option for ‘Run this program as an administrator
  7. Click on ‘Apply’ and launch the game again.

Reinstall The Game

If nothing works, your last resort is to reinstall the game. This is because while minor bugs go away after a quick restart, major ones require you to go through some extra trouble. Therefore, delete the game from the application and install it again. Hopefully, this will fix the issue.

Did we Resolve Your Diablo 3 Error Codes 1016 and 3006?

This was everything you needed to know about how to fix Diablo 3 error codes 1016 and 3006. While the error code may be frustrating, there are plenty of methods that can help fix the issue. But if you have tried everything and the problem is not going away, you need to contact support

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Abdul Haddi

Hadi is eXputer's Senior Writer & Editor; and likely the biggest gamer in an average circle. You can pitch him on any Gaming Network for assistance, and he will always be there to help!

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