Teredo unable to qualify after following all NAT/Teredo resetting steps

WSTELAND · Jun 15, 2020

Before resetting and updating my PC, I was able to use the xbox game bar perfectly but now I get the error of Teredo being unable to qualify. On the surface clicking "Fix It" in Xbox Networking looks to fix it, but as soon as I go to join a party it still
doesn't work. When I restart my PC and check again, the error pops up. I also followed all steps on the guide to resetting Teredo, but still no luck.

:)

Smuroh

Hi WSTELAND,

I am currently working through this issue myself, by the looks of it, it could be an antivirus issue but once i figure out a solution I will come back here and post it.

shabbs6091

Thank you for the suggestion, I did find out that "Teredo is unable to qualify" however all the solutions on the "NAT type on Windows displays "Teredo is unable to qualify" Microsoft page did not work, and I still cannot connect to Horizon life, could this be a problem on their end?

Lucas Lauer

That's exact what I wanted. Thanks for sharing.

You have Teredo unable to qualify and server connectivity blocked. This can cause a lot of issues since you cannot connect properly with the Xbox servers.

Please click on "Click here for more information" on your connection test to try to make these two error messages disappear.

Also please do:

If you are running Windows 10 Pro please follow these steps:

Press Windows + R, type gpedit.msc and press enter;

Under Computer Configuration > Administrative Templates > All Settings

Find "Set Teredo Client Port" , "Set Teredo Default Qualified" , "Set Teredo Refresh Rate", "Set Teredo Server Name", "Set Teredo State". Change these settings like below:

Set Teredo Client Port - Enable - input " 0"

Set Teredo Default Qualified - Enable - choose "Enabled State"

Set Teredo Refresh State - Enable - Choose "30" or "20"

Set Teredo Server Name - Enable - input "win10.ipv6.microsoft.com"

Set Teredo State - Enable - choose "Client" (If after doing all steps it fails, try choose Enterprise Client instead.)

Then follow the steps on the Xbox website for both issues, restart your computer and see if your connection result shows Open NAT and connected to server.

Let me know how it goes, please.

John_088

Nat Type says Teredo is unable to qualify. Server connectivity says blocked.

XBF Mohammed C

If your NAT type says "Teredo is unable to qualify" , I would recommend checking the numerous potential solutions mentioned in this link: NAT type on Windows 10 displays "Teredo is unable to qualify" | Xbox Support

Note: Try to go through the steps one by another, if the first does not solve the issue, move to the next!

Teredo unable to qualify after following all NAT/Teredo resetting steps