How to solve IPv6 issues

This guide will teach you how to adjust your IPv6 settings which may be the cause of connections issues.

Windows

1) Open the control panel on your computer.

• Windows 7; Go to Start and open up your control panel.
• Windows 10; Press WinKey and search for control panel.

2) Open Network and Sharing Centre.

• If your view is set to Category click first on Network and Internet.

4) Click on your used connections device.

• This is usually called Ethernet but the name can differ, see the screenshot below.

5) Click on Properties in the General tab of the network device status.

6) Scroll down till you see Internet Protocol Version 6 (TCP/IPv6).

7.A) Solution 1 - Force IPv6 DNS server;

1. Double click on Internet Protocol Version 6 (TCP/IPv6).
   
   

1. Check Use the following DNS server addresses.
2. Set 2001:4860:4860:0:0:0:0:8888 as Preferred DNS server.
3. Set 2001:4860:4860:0:0:0:0:8844 as Alternative DNS server.
4. Check Validate settings upon exit.
5. Click OK twice.
6. Click Close.

7.B) Solution 2 - Disable IPv6 (last resort);

1. Uncheck Internet Protocol Version 6 (TCP/IPv6).
2. Click Ok.
3. Click Close.

MacOS

1. Open System Preferences and click the Network icon.
2. Select the network you are using.
3. Click the Advanced button
   
4. Click the TCP/IP tab
5. Select the Configure IPv6 drop-down menu and set it to Link-local only.
   
6. Click OK.
7. Restart your computer.