Teredo Adapter is a virtual network interface that helps your Windows 10 device communicate over IPv6 networks using IPv4 infrastructure. It is especially useful for applications that require IPv6 connectivity but are behind routers or firewalls that only support IPv4. Sometimes, the Teredo Adapter may be missing or not working properly on your system.
In this guide, you will learn how to download and install the Teredo Adapter on Windows 10 step-by-step. Each step is explained clearly to make the process simple, even if you have no technical background.
By the end of this article, you will understand how to enable, install, and troubleshoot the Teredo Adapter to restore its functionality on your PC.
Let’s get started with the basics and move through the installation process carefully.
Quick Note Before You Begin
- Make sure your Windows 10 system is up to date with the latest updates installed.
- Check that you have administrative privileges, as installing device drivers requires admin rights.
- Verify that your network adapter and internet connection are working properly.
- Disable any third-party firewall or VPN temporarily, as they can interfere with Teredo functionality.
Step 1: Check if Teredo Adapter is Already Installed
Before attempting to download or install, it’s important to check if the Teredo Adapter is already present but disabled on your computer.
- Press
Windows + Rto open the Run dialog box. - Type
devmgmt.mscand press Enter to open Device Manager. - In Device Manager, click on View at the top menu and select Show hidden devices.
- Expand the Network adapters section and look for Teredo Tunneling Pseudo-Interface.
If you see it listed, it means the driver is installed but might be disabled or not working correctly. If it’s missing, proceed to the next step.
Step 2: Enable Teredo Adapter Using Command Prompt
Sometimes the Teredo Adapter is installed but disabled by Windows. You can enable it manually using Command Prompt.
- Click on the Start menu, type cmd, right-click Command Prompt, and select Run as administrator.
- In the Command Prompt window, type the following command and press Enter:
netsh interface teredo set state type=defaultThis command resets and enables the Teredo state to default. You should see a message confirming the change.
To check the current status of Teredo, run:
netsh interface teredo show stateIf the status shows “qualified” or “dormant,” Teredo is enabled and ready to use.
Step 3: Install Teredo Adapter Manually via Device Manager
If the Teredo Adapter is missing, you can manually add it through Device Manager.
- Open Device Manager (see Step 1 for how to open it).
- Click on Action in the top menu and select Add legacy hardware.
- In the Add Hardware Wizard, click Next.
- Select Install the hardware that I manually select from a list (Advanced) and click Next.
- Scroll down and select Network adapters, then click Next.
- Under Manufacturer, select Microsoft. Under Network Adapter, look for Teredo Tunneling Pseudo-Interface and select it.
- Click Next, then Finish to complete the installation.
This process installs the Teredo Adapter driver manually, which should resolve the missing adapter issue.
Step 4: Verify Teredo Adapter Installation
After installation, verify that the Teredo Adapter is working correctly:
- Return to Device Manager and confirm that the Teredo Adapter appears under Network adapters without any warning icons.
- Open Command Prompt as an administrator and run
netsh interface teredo show stateto check its status. - If the status is “qualified,” the Teredo Adapter is functioning properly.
Alternative Method: Using PowerShell to Enable Teredo
If Command Prompt commands don’t work or you prefer using PowerShell, follow these steps:
- Right-click the Start menu and select Windows PowerShell (Admin).
- Type the following command and press Enter:
Set-NetTeredoState -Type DefaultThis command enables Teredo tunneling in PowerShell.
FAQs About Teredo Adapter on Windows 10
Q: What is the Teredo Adapter used for?
A: It allows IPv6 connectivity over IPv4 networks, helping applications communicate when native IPv6 is unavailable.
Q: Why is my Teredo Adapter missing?
A: Windows may hide or disable it if it’s not needed or due to network configuration issues. Sometimes, driver corruption can cause it to disappear.
Q: Can I uninstall the Teredo Adapter?
A: Yes, but doing so may affect certain applications that rely on IPv6 connectivity. It’s safe to uninstall only if you are sure you do not need Teredo services.
Q: How can I tell if Teredo is working?
A: Use the command netsh interface teredo show state in Command Prompt; if the status is “qualified,” it is working properly.
Q: Does Teredo impact my internet speed?
A: Teredo generally has minimal impact but can add slight overhead when tunneling IPv6 packets over IPv4.
When Nothing Works
If you have followed all the steps and the Teredo Adapter still does not install or work, consider these final options:
- Run the Windows Network Troubleshooter by going to Settings > Update & Security > Troubleshoot > Additional troubleshooters and selecting Network Adapter.
- Reset your network settings by opening Command Prompt as admin and running:
netsh int ip reset
netsh winsock reset- Check for official Microsoft support articles or forums for your specific error codes or device issues.
- Consider updating your Windows 10 to the latest version, as updates often fix network-related bugs.
- If you are comfortable, perform a system restore to a point when Teredo was working correctly.
Conclusion
The Teredo Adapter is an important component for enabling IPv6 connectivity on Windows 10 through IPv4 networks. This step-by-step guide walked you through checking for the adapter, enabling it via commands, and manually installing it if missing. You also learned how to verify the installation and troubleshoot common problems.
By following these instructions carefully, you should be able to restore or install the Teredo Adapter and ensure your system supports modern network protocols. Remember to keep your system updated and check network settings regularly for smooth operation.