How to fix the error IPv6 No Network Access

The cause of the IPv6 No Network Access error

When a device connects to the Internet, that device receives one or more network addresses. Usually, a device receives both an IPv4 address and an IPv6 address. IPv6 is a newer networking standard that aims to allow a larger network of connected devices than the old IPv4 protocol, which is widely used.

When properly configured, most devices perform well when a network connection is made with at least one of these two protocols. But sometimes, a device connects to and receives an IPv4 address, not an IPv6 address. For example, in Windows, when you view the network connection details, the device may show the connection to an IPv4 network but shows No Internet access next to the IPv6 connection.

There are several reasons why this error occurs. In most cases, the cause is revealed through the correct troubleshooting step that helps resolve the issue.

The network that you use must support an IPv6 connection. In some cases, the network administrator may have configured the network to support only IPv4 connections. If this is the case, you cannot enable IPv6 connectivity to that network, no matter what changes you make on the device.

IPv6 No Network Access error

How to fix IPv6 No Network Access error

Try the following steps to troubleshoot IPv6 connection.

1. Reboot the device

When you restart a device, you also restart that device's network connections. Many network problems that are difficult to fix can be solved by turning the device off and then on again. During the boot process, most devices will automatically rejoin previously connected wired or wireless networks.

2. Restart the router and modem

Problems with your Internet service provider or router may result in a loss of connection with the IPv6 address. If you have two network devices, reboot the modem first, then wait a minute or two and reboot the router.

1. Why does restarting the router fix so many problems?

Nowadays, Internet service providers tend to provide customers with a single device that acts as both a modem and a wireless router. If that's what you have, turn the device off, wait a minute, and then turn it back on.

3. Update the device's operating system

Operating system updates often include fixes for unusual network connectivity problems.

1. How to keep your Windows computer up to date

4. Check for network device driver updates (Windows)

PC and network device manufacturers often provide network driver updates for devices that work with Windows. Check the manufacturer's support website to find out about any available device driver updates. In some cases, you may need to install more than one device driver update.

5. Upgrade the router firmware

Router manufacturers tend to release periodic updates to improve device security and performance, including how devices handle IPv6 connections.

Improvements often fix problems with connectivity between the router and Internet service provider, as well as the connection between the router and local devices on the network. For example, some older routers added or improved support for IPv6 connectivity in later firmware updates. However, some older routers do not fully support IPv6.

6. Run Windows Troubleshooter (Windows 10)

This application is used to fix Internet connections. From the Start menu , select Settings> Update & security> Troubleshoot . Next, select Internet Connections , then choose Run the troubleshooter. Follow the on-screen prompts and allow the troubleshooter to handle any identified problems.

7. Turn off and then turn on each network connection (Windows)

In some cases, this can help identify a specific problem with the device or connection.

8. Reset IPv6 settings from Command Prompt (Windows)

Here's how to do it:

- Open Command Prompt with admin rights.

- Enter netsh winsock reset catalog , then press the key Enter.

- Enter netsh int ipv6 reset reset.log and press the key Enter.

- Reboot the system.

9. Reset network settings on iOS or Android device

This will clear the settings for the WiFi network and reset the mobile network settings to default. For Google Pixel devices and other Android 9.0 Pie systems, go to Settings> System> Reset options> Reset Wi-Fi, mobile & Bluetooth . This should resolve any issues caused by manually configuring an IPv6 network connection.

10. Turn off any active virtual private network (VPN) connections

Many VPN programs and connections disable IPv6 connection to help secure the network connection. These programs manage and restrict your device's exposure to network information.

An active VPN connection can also automatically turn off any IPv6 network connections. After you turn off the VPN, the device will connect to the Internet normally.

If you find that this solves the problem, check with your VPN provider to see if they offer alternative settings with IPv6 support. Many VPN services have devised methods to allow IPv6 connections, while hiding the IPv6 data of the actual device. However, not all VPN services support IPv6 connectivity.

11. Turn off firewall on Windows or macOS devices

An incorrectly configured firewall may block some or all of the IPv6 network connections. If IPv6 networking works when the firewall is disabled, review the firewall settings or restore the default firewall settings.

Many third-party security applications include firewalls. Look in the settings to temporarily disable the firewall that came with the security software on your system.

12. Turn off IP Helper service (Windows)

This feature attempts to manage some aspects of the IPv6 connection. To disable it:

Press the Win+ key R, then type services.msc in the displayed Run box and select OK.

This will open a list of Windows system services. Scroll through the list and find the service named IP Helper , then right-click on the service name and select Properties.

In the Startup type drop-down list , select Disabled> OK .

Reboot the system, then check if the existing IPv6 connection is working as expected.

13. Access the router as an administrator

Explore the controls to make sure that IPv6 connections are enabled. Change the setting to Auto Detect or Auto-Config, if either option is available. If not, make sure the service is enabled.

Once enabled, you may need to restart your router to establish an IPv6 connection. It may take a while for the IPv6 connection to work and be available, so wait a few more minutes after you start the router to check the connection.

14. Adjust the IPv6 tunnel settings

The final step to take is to adjust how the router and home network handle IPv6 addresses. Try this while accessing your home router as admin. Since IPv6 is designed for every device to have a directly accessible address, the default settings for modern routers connecting to today's Internet service providers should work fine.

You can experiment with other IPv6 settings on your router if you have problems. First, select 6to4 tunnels in the router's settings to allow IPv6 and IPv4 traffic, as well as the devices to work together. Another option is to disable shared IPv6 connections.

For example, some people report that disabling Share IPv6 connection on Apple Airport routers will resolve IPv6 connection problems for local devices.

15. Contact the device manufacturer for further assistance

If your IPv6 network access problems are not resolved, the last resort is to seek professional help.