IPv6 Partial Connectivity – Complete Fix Guide (2026)

Table of Contents

• Why IPv6 Partial Connectivity Happens
• 1. Check Your IPv6 Connectivity Status
• 2. Restart Your Router and Computer
• 3. Reset TCP/IP Stack and Winsock
• 4. Disable and Re-enable IPv6
• 5. Change DNS Server Settings
• 6. Check Router IPv6 Configuration
• 7. Update Network Drivers
• 8. Check Firewall and Antivirus Settings
• 9. Advanced Troubleshooting
• Conclusion
• FAQ

Hub: Windows 11 Troubleshooting Hub

Quick Answer
IPv6 Partial Connectivity occurs when some websites load via IPv6 while others fail. To fix it, check your IPv6 status, restart your router, reset TCP/IP stack, disable and re-enable IPv6, change DNS servers to Google or Cloudflare, and check your router’s IPv6 configuration. If the error persists, update network drivers, check firewall settings, or perform advanced troubleshooting like using the Windows Network Troubleshooter. For more networking troubleshooting, visit our Windows 11 Troubleshooting Hub.

Why IPv6 Partial Connectivity Happens

IPv6 Partial Connectivity is a network issue where some websites load over IPv6 while others fail or fall back to IPv4. This occurs when your IPv6 configuration is incomplete or misconfigured. For official documentation, refer to the Microsoft IPv6 Configuration documentation.

IPv6 Partial Connectivity can be caused by several factors: incomplete IPv6 deployment by your ISP, misconfigured router IPv6 settings, incorrect DNS settings, firewall blocking IPv6 traffic, or outdated network drivers. This issue is similar to other network problems like WiFi Connected but No Internet on Windows 11 and IPv6 Connectivity No Internet Access.

Before diving into fixes, visit a website like test-ipv6.com to check your IPv6 connectivity. This helps determine if the issue is with your IPv6 configuration or something else. For a broader overview of network errors, see our Windows 11 Troubleshooting Hub.

1. Check Your IPv6 Connectivity Status

Before making changes, verify your IPv6 status. This helps determine if IPv6 Partial Connectivity is indeed the issue.

1. Visit test-ipv6.com to check your IPv6 status.
2. Open Command Prompt and run:

   ipconfig /all

3. Look for “IPv6 Address” under your network adapter.
4. Run ping -6 google.com to test IPv6 connectivity.
5. Check if any IPv6 addresses are marked as “temporary” or “link-local” only.

2. Restart Your Router and Computer

A simple restart can resolve temporary network glitches causing IPv6 Partial Connectivity.

1. Restart your computer.
2. Power off your modem and router. Unplug them from power.
3. Wait 30 seconds, then plug them back in.
4. Wait for all lights to stabilize, then restart your PC.
5. Open Chrome and test IPv6 connectivity again.

3. Reset TCP/IP Stack and Winsock

A corrupted TCP/IP stack can cause IPv6 Partial Connectivity. Resetting it restores default network settings.

1. Open Command Prompt as Administrator.
2. Run the following commands in sequence:

   netsh int ip reset
   netsh winsock reset

3. Restart your PC.
4. Test IPv6 connectivity again.

4. Disable and Re-enable IPv6

Disabling and re-enabling IPv6 can refresh the configuration and resolve IPv6 Partial Connectivity.

1. Open Control Panel > Network and Sharing Center > Change adapter settings.
2. Right-click your active network connection and select Properties.
3. Uncheck Internet Protocol Version 6 (TCP/IPv6).
4. Click OK and restart your PC.
5. Go back to Properties and re-check IPv6.
6. Restart your PC again and test.

5. Change DNS Server Settings

DNS issues can cause IPv6 Partial Connectivity by providing incomplete DNS records. Changing to public DNS servers can help.

1. Open Control Panel > Network and Sharing Center > Change adapter settings.
2. Right-click your active network connection and select Properties.
3. Select Internet Protocol Version 6 (TCP/IPv6) and click Properties.
4. Select “Use the following DNS server addresses” and enter:
   • Preferred DNS server: 2001:4860:4860::8888 (Google DNS IPv6)
   • Alternate DNS server: 2001:4860:4860::8844 (Google DNS IPv6)
5. Alternatively, use Cloudflare DNS IPv6: 2606:4700:4700::1111 and 2606:4700:4700::1001.
6. Click OK and restart your PC.

6. Check Router IPv6 Configuration

Router misconfiguration is a common cause of IPv6 Partial Connectivity. Check your router’s IPv6 settings.

1. Log into your router’s admin panel (usually at 192.168.1.1 or 192.168.0.1).
2. Look for IPv6 settings (often under “Advanced” or “IPv6” sections).
3. Ensure IPv6 is enabled.
4. Check the connection type: most ISPs use DHCPv6 or Stateless Autoconfiguration (SLAAC).
5. Ensure the router has obtained a valid IPv6 prefix from your ISP.
6. If you are unsure, contact your ISP for the correct IPv6 settings.

7. Update Network Drivers

Outdated network drivers can cause IPv6 Partial Connectivity by not fully supporting IPv6. Updating them can resolve the issue.

1. Open Device Manager.
2. Expand Network adapters.
3. Right-click your network adapter and select Update driver.
4. Select “Search automatically for drivers”.
5. If Windows doesn’t find updates, visit your manufacturer’s website to download the latest driver.
6. Restart your PC.

8. Check Firewall and Antivirus Settings

Firewalls and antivirus software can block IPv6 traffic, causing IPv6 Partial Connectivity.

1. Open your antivirus application.
2. Check if IPv6 traffic is being blocked.
3. Open Windows Security > Firewall & network protection.
4. Click “Allow an app through firewall” and ensure IPv6 traffic is allowed.
5. Temporarily disable the firewall to test.
6. If the error resolves, add an exception for IPv6 traffic.

9. Advanced Troubleshooting

If the error persists, try these advanced solutions.

Check for Malware

Malware can interfere with IPv6 connectivity. Run a full scan with Windows Defender Offline. For detailed steps, see How to Scan Malware Windows 11.

Use the Windows Network Troubleshooter

Run the built-in network troubleshooter: Settings > System > Troubleshoot > Other troubleshooters > Internet Connections > Run.

Check for IPv6 Leaks

If using a VPN, check for IPv6 leaks using online tools. VPNs often block IPv6 to prevent leaks.

Disable IPv6 for Specific Network Adapters

If you have multiple network adapters, disable IPv6 on those you are not using to avoid conflicts.

Perform a System Restore

If the error started after a system change, use System Restore to revert. See How to Use System Restore Windows 11.

For more networking troubleshooting, explore our Windows 11 Troubleshooting Hub.

Conclusion

IPv6 Partial Connectivity is a common network issue that can be fixed by checking your IPv6 status, restarting your router, resetting TCP/IP, disabling and re-enabling IPv6, changing DNS servers, checking router configuration, updating network drivers, and adjusting firewall settings. If the error persists, perform advanced troubleshooting like scanning for malware or using the Windows Network Troubleshooter. By following these steps, you can resolve the error and restore full IPv6 connectivity.

Regular system maintenance, such as keeping your network drivers updated and maintaining a stable network connection, can prevent IPv6 Partial Connectivity from recurring. For more Windows and networking troubleshooting, explore our Windows 11 Troubleshooting Hub and check out related articles on IPv6 Connectivity No Internet Access, WiFi Connected but No Internet, and DNS Server Not Responding.

Related Guides

• Windows 11 Troubleshooting Hub
• IPv6 Connectivity No Internet Access Error
• WiFi Connected but No Internet on Windows 11
• DNS Server Not Responding in Windows 11
• Internet Works But Apps Won’t Connect
• Windows 11 Update Stuck Fix
• How to Update Drivers Windows 11
• How to Use System Restore Windows 11
• How to Scan Malware Windows 11
• Windows 11 High CPU Usage Fix

FAQ