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Fix IPv6 No Network Access Error

Windows displays No Network Access for IPv6 while IPv4 works fine, typically caused by ISP lack of support, disabled router settings, or broken Teredo tunneling.

ipv6no-network-accesswindows-networking

Confirmed working on: Windows 10 · Windows 11

Before you begin

Match the environmentUse this guide only for Windows 10, Windows 11 or a clearly compatible setup.
Protect recoveryBack up important data and save encryption or account recovery keys before changing system state.
Know when to stopMake one change at a time and stop if the result differs from what the guide describes.

Problem overview

In your Windows network status, the IPv4 connection shows as “Internet,” but IPv6 shows as “No network access.” Your internet works, but applications that rely heavily on IPv6 may experience connectivity issues.

Common causes

  • Your internet service provider (ISP) does not currently support IPv6 routing
  • IPv6 is disabled in your router’s admin panel
  • Corrupted Windows network stack or IPv6 interface settings
  • Conflicts with Teredo tunneling adapters

Solution 1: Check router and ISP support

  1. Log into your router’s web interface (typically 192.168.1.1 or 10.0.0.1).
  2. Navigate to the Advanced or Network settings and find the IPv6 section.
  3. Ensure the IPv6 connection type is set to Auto Detect or DHCPv6.
  4. Save the settings and reboot the router.
  5. If the router cannot pull an IPv6 address after a reboot, contact your ISP to confirm if they deploy IPv6 to residential customers.

Solution 2: Reset the IPv6 stack in Windows

  1. Open the Start Menu, type cmd, right-click Command Prompt, and select Run as administrator.
  2. Reset the IPv6 interface by typing: 
    netsh int ipv6 reset
  3. Reset the Winsock catalog by typing: 
    netsh winsock reset
  4. Restart your computer.
Expert Tip

Running these reset commands will clear any broken static IP configurations and force Windows to request fresh routing data.

Solution 3: Disable and re-enable IPv6 on the adapter

  1. Press Windows Key + R, type ncpa.cpl, and hit Enter.
  2. Right-click your active network adapter and select Properties.
  3. Uncheck the box next to Internet Protocol Version 6 (TCP/IPv6).
  4. Click OK, wait 10 seconds, then open Properties again.
  5. Re-check the box to re-enable IPv6 and click OK.

Solution 4: Disable Teredo tunneling

  1. Open Command Prompt as administrator.
  2. Check the Teredo status by running: 
    netsh interface teredo show state
  3. If it shows errors or a disabled state, disable it completely to prevent conflicts: 
    netsh interface teredo set state disabled
  4. Restart your PC. If you do not explicitly need Teredo for legacy Xbox networking, leaving it disabled is recommended.
Caution

If you determine that your ISP does not support IPv6, it is best practice to uncheck IPv6 in your adapter properties. This stops Windows from wasting resources attempting to connect to non-existent IPv6 gateways.

Confirm the result

  1. Repeat the exact action that originally triggered the problem.
  2. Confirm the original error or symptom is gone and no new warning has appeared.
  3. If the guide changed a driver, service, package, or system setting, restart once and test again.
  4. If the result is worse or unexpected, stop. Reverse only the last change using its documented restore option; if none is documented, use your backup or qualified support.

Questions about this fix

Do I actually need IPv6?

For most daily web browsing, IPv4 is perfectly sufficient. However, modern Xbox network features and some smart home devices perform better with IPv6.

Why does my router have IPv6 turned off?

Many manufacturers disable it by default to ensure backward compatibility and prevent localized routing bugs.

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