How do I fix IPv6 connectivity?

Try the following troubleshooting steps to fix an IPv6 connection issue.

1. Restart the device. …
2. Restart the router and modem. …
3. Update the device’s operating system. …
4. Check for network device driver updates (Windows). …
5. Upgrade the router’s firmware. …
6. Run the Windows Troubleshooter (Windows 10).