How To Fix Diablo 3 Error Codes 1016 And 3006

Here's a detailed guide to help you fix Diablo 3 Errors 1016 and 3006 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 caused by Firewall or antivirus software, Network configuration issues, and Blizzard account issues, but luckily there are a handful of fixes that you can try. 

Error 1016-Image By eXputer
The error says: “There was an error. (Code 1016)”
Error 3006-Image By eXputer
The error says: “The request has timed out. (Error 3006)”
Key Takeaways

These fixes will make the error go away in no time:

  1. Power cycling the internet router
  2. Disabling IPv6
  3. Disabling Windows Firewall
  4. Launching the game in compatibility mode for Windows 7
  5. Resetting the IP address
  6. Repairing the game files
  7. Reinstalling the game
  8. Contacting Support

Power Cycle Your Router:

The error codes are often linked to network issues, so you need to power cycle your router. Power cycling your router can potentially solve Diablo 3 Error Codes 1016 and 3006 by resetting its internal processes and clearing temporary memory. This can sometimes resolve minor glitches or temporary issues that might be causing connection problems with Diablo 3.

You can do so by reading how to power cycle your router in a few easy steps. 

Try Disabling Internet Protocol Version 6 (IPv6):

A lot of you might not know this, but Diablo 3 often faces compatibility issues with IPv6. By disabling IPv6, you force your computer to use IPv4 exclusively, which is the protocol that Diablo 3 was primarily designed for. This can sometimes resolve connection issues that arise due to incompatibilities or conflicts between IPv6 and Diablo 3’s networking implementation. Therefore, you need to disable it, as it can sometimes fix the issue. 

  1. Open the Control Panel on your PC.
  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
    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).’
    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 codes 1016 and 3006. By resetting your IP address, you are essentially forcing your internet service provider (ISP) to assign you a new IP address, which can clear out any temporary glitches or conflicts that might be interfering with your connection. This can sometimes resolve connection errors or instability that arise due to IP address issues. In such cases, your only option is to reset your IP address. Don’t worry; while this may sound complicated, it isn’t.

To find out how to reset your IP, read our detailed guide on the topic. An alternative approach would be changing servers in the Diablo 3 client to solve the error. 

Repair The Game Files:

Sometimes, the error is caused due to corrupt game files. If this is the case, you need to repair them in order to remove any corrupted files. Thankfully, the Battle.net app allows you to to repair game files quickly.

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.
 Important: 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. Running Diablo 3 in compatibility mode for Windows 7 may help resolve Error Codes 1016 and 3006 by emulating the environment of Windows 7, which Diablo 3 was originally designed for. This can be particularly useful if you’re encountering compatibility issues between Diablo 3 and your current operating system, such as Windows 10 or 11.

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 Batlle.net application and install it again. Hopefully, this will fix the issue.

Contact Support:

Assuming none of the fixes I listed worked for you, you’re only remaining option is to submit a report of your error on the Battle.net support page and wait for them to address the issue. Since Diablo 3 has a good support team, I have no doubt your issue will be resolved soon.

My Thoughts On Diablo 3 Error Codes 1016 And 3006:

I’ve been enjoying Diablo 3 the past month but encountering error code after error code has started to drive me away from the game. Although Blizzard has had many successful games, they definitely need to step up their game when it comes to fixing their games’ errors and bugs.

While I am hopeful, seeing how Blizzard has treated their games in the past, I wouldn’t be surprised if these errors remain unresolved by then. As of right now, Blizzard have not taken notice of these errors and have not released any official announcement. 

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Hashim is a Junior Error Fixes Writer at eXputer. Hashim has been obsessed with games ever since his Xbox 360 days. Whether it was shooting down zombies on COD Black Ops 2, racing past players in Need for Speed Most Wanted 2, or beating up Frieza in Dragon Ball Raging Blast 2. With more than 1,000+ hours of gaming, you can trust Hashim when it comes to fixing errors!

Experience: 2+ years || Worked for ComputerVerge || Covers Error Fixes

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