Hello, I'm Louie, and I'm happy to help you today. Hope you're doing well and safe there. I'm sorry that you're having trouble with your IPV6 address.
I would suggest first you to turn off your modem/router and leave it off for just a minute then turn it back on followed by running network troubleshooter, use these steps:
Open Settings.
Click on Update & Security.
Click on Troubleshoot.
Under the "Recommended troubleshooting" section, click the Additional troubleshooters option.
Under the "Get up and running" section, select the Internet Connections troubleshooter.
Quick note: On Windows 10 version 1909 and earlier, the option is available within the Troubleshoot page.
Click the Run the troubleshooter button.
Select the Troubleshoot my connection to the Internet option.
Select the Try these repairs as an administrator option (if applicable).
Continue with the on-screen directions (if applicable).
After you complete the steps, the troubleshooter will run and fix any connectivity issues.
In the event that troubleshooter didn't work, try resetting the TCP/IP stack and clearing any DNS information on Windows 10.
Reset the network stack using Command Prompt by following these steps:
- Open Start.
- Search for Command Prompt, right-click the top result, and select the Run as administrator option.
- Type the following command to reset the component that handles network requests and press Enter:
netsh winsock reset
- Type the following command to reset the internet protocol stack and press Enter:
netsh int ip reset
- Type the following command to clear the current networking configuration and press Enter:
ipconfig /release
- Type the following command to reconfigure the network settings and press Enter:
ipconfig /renew
- Type the following command to clear the DNS information cached and press Enter:
ipconfig /flushdns
Restart your computer.
Once you complete the steps, launch the web browser and confirm the internet is working.
- If the steps above still doesn't work, reset all the network adapters, use these steps:
Open Settings.
Click on Network & Internet.
Click on Status.
Under the "Advanced network settings" section, click the Network reset option.
Click the Reset now button.
Click the Yes button.
After you complete the steps, the computer will restart automatically, and on reboot, you should now be able to connect to the internet.
Take note thay this will reset all the network adapters installed on your computer to their factory defaults, you'll need to re-enter your password to connect to WIFI network. You'll need to reconfigure other networking software, such as VPN clients, if applicable.
You may also run SFC Scan / DISM by following the steps on the thread below.
https://answers.microsoft.com/en-us/windows/for...
Hope this helps.
Sincerely,
Louie