How to fix the ‘Teredo is Unable to Qualify’ Error in Windows 10?

Teredo is a protocol for network adapters. It enables users to connect to the Internet using IPv6 even if they are connected to the Internet via IPv4 and do not have access to a native IPv6 network.

Many users see the error message “Teredo is Unable to Qualify”. For gamers, this bug might be annoying because it prevents them from playing multiplayer games.

This is a relatively classic error that can be easily fixed by following the steps outlined below. In this article, we’ll go through all of the reasons why this problem happens and what workarounds there are to fix it.

What are the reasons for the ‘Teredo is Unable to Qualify’ Error?

There are various possible causes for this problem. The majority of them are network-related.

  • If the IP Helper service is not enabled or is manual.
  • If your router does not support UPnPv2.
  • If your Teredo adaptor is corrupted, then you may get this error message.
  • If you’re using a VPN, it may interfere with your Xbox One gaming experience and probably send you error messages.

How Do I Fix Xbox ‘Teredo is Unable to Qualify’ Error in Windows 10?

We have below compiled some simple strategies and techniques for resolving this Teredo is Unable to Qualify Windows PC Error issue.

Solution 1: Checking Internet Connection

You won’t be able to connect via the Teredo protocol if you have internet problems that prevent your system from connecting to servers. So, before you start troubleshooting, make sure your Internet is up and working.

Step 1: Open the Xbox app on your PC.

Step 2: Click the Setting > Network option.

Step 3: Check whether your Internet connection is set to “Connected.”

Step 4:  If it is showing “Connected,” you can continue troubleshooting.

Solution 2: Uninstall & Reinstall the Teredo App

You can Uninstall and reinstall the Teredo software on your Xbox One, then reconnect to the multiplayer gaming mode to fix the Xbox App “Teredo is Unable to Qualify” error on your Windows PC.

Step 1: Type Windows + R, then type cmd on the Run box.

Step 2: Right-click the command prompt and choose Run as Administrator from the context menu.

Step 3: Enter the command – “netsh interface Teredo set state disable” and press enter.

Step 4: open device manager by typing it in the search box.

Step 5: To see hidden devices, go to View > Show Hidden Devices.

Step 6: Select Network Adapters and double-click it.

Step 7: Remove the adapter that contains Teredo by right-clicking it and selecting uninstall.

Step 8. At last, restart your computer.

Step 9: To reactivate the disabled Teredo, open Command Prompt and perform the command “netsh interface Teredo set state type=default”

Solution 3: Check if IP Helper is running

Step 1: Type Services into your search box on the start menu, and then navigate to it.

Step 2: Locate the IP Helper in the Services panel and look for its Startup Type;

Step 3: If it’s Automatic, that’s great; if it’s not, change it to Automatic.

Step 4: Restart the Service and confirm by clicking OK.

Solution 4: Disable VPN services on your system

Step 1: Go to device manager.

Step 2: Navigate to Show Hidden Devices > Network Adapters.

Step 3: Remove any adapters that have the name TAP-Windows Adapter V9 or a similar name.

Step 4: Restart your computer after making the adjustments to see whether the “Teredo is Unable to Qualify” error has been resolved.

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