Windows 10: Teredo unable to quaify

I've encountered an issue which has made my pc unable to play online games. It's been present for about to days, and has left me unable to join online sessions. I believe it stems from problems with the teredo driver. I've tried all the trouble shooting methods listed under the link on the settings page.

Screenshot of error- https://imgur.com/FBuVTaF



I've also noticed that nothing related to teredo appears in my network adapters in the drivers menu. Furthermore, when i go to install "legacy drivers", nothing related to teredo shows up.

Screenshots of drivers pages -https://imgur.com/a/mF8iXA5

Any help is appreciated!

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Teredo is unable to qualigy

Hello,

Thank you for writing to Microsoft Community Forums.

I understand that you are unable to join or host an Xbox Live multiplayer game. If you are getting an error message saying
Teredo is unable to qualify, then your PC is unable to obtain a Teredo IP address. Failure to obtain a Teredo IP address can occur when there’s an issue with your Teredo adapter, when a device on your network is
blocking the Teredo protocol, or if there’s software installed on your PC that’s disabling Teredo functionality.

I suggest you to try few troubleshooting steps to fix this issue, Refer the following article for troubleshooting steps to fix error,
Teredo is unable to qualify.

Disclaimer: The registry is a database in Windows that contains important information about system hardware, installed programs and settings, and profiles of each of the user accounts
on the computer. Windows often reads and updates the information in the registry.Normally, software programs make registry changes automatically. You should not make unnecessary changes to the registry. Changing registry files
incorrectly can cause Windows to stop working or make Windows report the wrong information.

Please take a backup of the registry. Follow the steps given in the link below:

Link: Load or Unload Registry Hives

Hope it helps.

Sandeep Kumar M

Microsoft Community – Moderator

 

Teredo unable to qualify

Hi JayKay,

Thank you for writing to Microsoft Community Forums.

Failure to obtain a Teredo IP address can occur when there’s an issue with your Teredo adapter, when a device on your network is blocking the Teredo protocol, or if there’s software installed on your PC that’s disabling
Teredo functionality. If you haven’t tried the methods listed in the following articles yet, I would suggest you to try them first and see if it works:

• Teredo is unable to qualify
  
• Xbox app server connectivity on Windows 10 is blocked
  
  

Note:

Serious problems might occur if you modify the registry incorrectly. Therefore, make sure that you follow these steps carefully. For added protection, back up the registry before you modify it. Then, you can restore the registry
if a problem occurs. To backup and restore registry key, refer to this
link.

If the issue persists, I would suggest you to
uninstall and re-install the Xbox app to see if you can get it to work.

• Right click the Windows icon on the taskbar and choose Windows PowerShell (Admin).
• Copy and paste the following command and hit Enter:
  
  Get-AppxPackage Microsoft.XboxApp | Remove-AppxPackage
• Reboot the computer once the command is executed.
• Once the machine restarts, launch Microsoft Store and reinstall the Xbox app.

After reinstalling the Xbox app, open Windows PowerShell (Admin)
again and copy paste the following command to enable Teredo.

netsh interface Teredo set state type=default

Let us know how it goes.

Regards,

 

My NAT type says "Teredo is unable to qualify"

Hi Kole,

You may receive the error message Teredo is unable to qualify
if your PC is unable to obtain a Teredo IP address. Teredo is a networking protocol that’s used to establish secure communications between clients and servers and to facilitate connectivity between devices behind routers that use network
address translation (NAT). To resolve your concern, we suggest that you follow the steps provided on this

link.

If you have already done those steps as you mentioned in your description, you may proceed to open the network ports and setting a static Teredo port by following the steps on this

link.

Keep us updated with the results after performing the suggested solutions above.