SOLVED! Teredo Client Port Unspecified

Are you dealing with “Teredo Client Port Unspecified” on Xbox? Xbox has become a popular gaming app since its introduction in 2001. Recently, Microsoft integrated the core of the Xbox app in their windows platform to make it more accessible to their users. However, while using the app, users are reporting the error message on their screens. If you’re dealing with the same, don’t worry. Here we have come up with easy instructions that fix Xbox issues smoothly, and you will be back to your game. 

What is the impact of Teredo Client Port Unspecified Error on Users?

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It is annoying for users when Teredo keeps going offline when you are ready to use it. However, many users probably uninstall and reinstall the software to fix the error—unfortunately, they are still dealing with the same problem. Thus, for your ease, we have investigated several causes and fixes that reduce your stress to remove the “Teredo Client Port Unspecified” error. 

What Are The Causes Of Teredo Client Port Unspecified Error? 

It is essential to know the causes of the “Teredo Client Port Unspecified” error before going to fix the issues. So, with the investigation, we are able to find out the following causes that can be yours too. Here they are:

  • Teredo tunneling is disable
  • Teredo is disable
  • Registry settings
  • Poor Xbox networking
  • The server name is set to the wrong value
  • Improper network adapter installation

How To Fix Teredo Client Port Unspecified Error?

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Due to the above-mentioned reasons, we have rounded up the best fixes for it. However, remember one thing, keep the backup of files before performing the fixes, just to be safe with your documents.  

Method 1- Enable Teredo Tunnelling

You will need to enable the Teredo Tunnelling by using Terminal. 


  • Step 1- Quit all programs you are working on, then press the Windows key and search CMD. 
  • Step 2- Now, right-click on the command prompt and then run as administrator. 
  • Step 3- CMD will appear in front of you, then type or copy-paste the following command. 

netsh interface teredo set state type=enterprise

  • Step 4- Run the command, and when it executes, check the Teredo state with the following command.

netsh interface Teredo show state

  • Step 5- Now check the client port and see it shows connected. 

The problem is solved, and you will resolve the error. In case the issue exists, then you’re running with another cause; look on method 2.

Method 2- Enable The Teredo

After installation, some users forget to activate the Teredo. Here’s how you can see and enable Teredo.

  • Step 1- Press the Windows key and type CMD to launch the command prompt
  • Step 2– Right-click on the command prompt and then choose to run as an administrator. 
  • Step 3– Enter the code below and hit to check whether the Teredo is enabled or disabled. 

netsh interface Teredo show state

  • Step 4– Run the command and type show. If it shows disabled on the Terminal, then enable it from the system. 
  • Step 5– Then reset it to default settings, close the CMD.
  • Step 6– Restart the PC and see the error is fixed.

If the error is not fixed, then move to the next method. 

Method 3- Run Registry Settings

Teredo can be disabled automatically if there is a problem in registry settings. See how you can fix it. 

  • Step 1- Press Windows + R key together and type CMD.
  • Step 2– Next, press ctrl + shift + enter together, and it will launch the Terminal.
  • Step 3– Type the following query in the terminal and press enter button. 

reg query HKLM/System\CurrentControlSet\Servcies\iphlpscv\Teredo

  • Step 4– Now see the results of this command. 

Type REG_Dword 0x4

Teredo is disabled.

  • Step 5- Type the following command and tap on the enter button. 

netsh interface Teredo set state type=default

  • Step 6- Now, you need to restart your IP helper service. Type the following command to start the IP helper service. 

sc stop iphlpsvc

sc start iphlpsvc

Once done, you can open the Xbox hassle-free. 

Method 4- Enable IP Helper Settings Into Automatic

If you are repeating the error, then enable the IP helper settings automatically. 

  • Step 1– Press the Windows key + R 
  • Step 2– Type services. msc and hit the enter button.
  • Step 3– The service box will open then locate the IP Helper service. 
  • Step 4- Double click on IP helper service 
  • Step 5– Now, click on the drop-down start-up type and select automatically. 
  • Step 6- Tap on the start button, and the service will start.
  • Step 7- Click on apply and ok to save the changes. 
  • Step 8– Restart your PC to see the effects. 

Method 5- Check Xbox Networking

In case you still persist with the issue, then there will be an Xbox networking issue. Here’s how you can fix it. 

  • Step 1– Open the Settings of your computer.
  • Step 2– Choose the gaming section, and on the left-hand side, you will find Xbox networking.
  • Step 3– Now, Scroll down the page and right-click on the side, and choose to fix it. The network issue will fix itself. 
  • Step 4- Xbox will soon fix the networking issue and solve the Teredo error. 

Method 6- Check The Server Name

  • Step 1- Start the CMD window from the search box.
  • Step 2- Right-click on CMD and run as an administrator. 
  • Step 3- Copy-paste the given command and enter. 

netsh interface Teredo show state

  • Step 4- If you see Teredo server is named wrong with following 

failed to resolve server name

  • Step 5– Set the server name to new with default settings and run the CMD in the Terminal.

netsh interface Teredo set state servername=default

Close CMD and see the “Teredo Client Port Unspecified” error is fixed. 

Frequently Asked Questions

1\ What is Teredo Xbox?

It is a networking protocol that establishes the connection between clients and servers.

2\ What’s the purpose of Teredo?

It is an IPv6 transition technology that offers address assignment to host automatic tunneling.

3\ Is Teredo important?

Yes, if you are using IPv6. It is used to get compatibility mode.

Tips And Tricks

  • Uninstall Teredo adapter
  • Reinstall network adapter
  • Check Xbox settings

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