How to Fix ERR_TUNNEL_CONNECTION_FAILED in Chrome? (7 Ways)

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Quick Steps on How to Fix ERR_TUNNEL_CONNECTION_FAILED Error in Chrome

Struggling with the ‘ERR_TUNNEL_CONNECTION_FAILED’ error in Google Chrome? Our comprehensive resource simplifies the entire process, giving you quick fixes and long-term solutions.

Google Chrome is one of the most used web browsers around the globe. If you have internet, which is not unusual these days, then it’s obvious you might already be a regular user of Google Chrome. Similarly, Google Chrome is also popular for showing error messages. And why it’s showing the error is not always one particular.

Nonetheless, among the pool of errors shown by Google Chrome, one of the common Google Chrome errors is ERR_TUNNEL_CONNECTION_FAILED. Hence, if you’re facing this error message and want to find out how to fix it, how to bypass it, and what does it means, then keep reading, as we’re going to cover the same.

What is ERR_TUNNEL_CONNECTION_FAILED Error in Google Chrome?

In simple terms, ERR_TUNNEL_CONNECTION_FAILED Error in Google Chrome is displayed whenever the Chrome browser fails to generate a tunnel that connects with the website host site visitor trying to open or if your internet fails to connect with the browser.

However, the main culprit behind getting this Net Err_Tunnel_Connection_Failed error is using a proxy to communicate with the internet.

Another common reason you may encounter this Google Chrome error message is if your Chrome browser uses browsing data or cookies saved within Google Chrome.

Further, it could be because of conflicting browser data, incorrect website domain configuration, incorrect proxy settings, or a DNS connection. Though whatever the reason might be, one thing is for sure it’s easier to resolve this Chrome browser error.

How to Fix: ERR_TUNNEL_CONNECTION_FAILED Error in Google Chrome

Usually, once you disable a proxy setting, this Net Err_Tunnel_Connection_Failed error message gets resolved. But sometimes, you may even require other methods if this one fails. Hence, the different techniques with proper steps are below, including Disabling of Proxy setting. So, go through it individually and find out which resolves it.

Disable Proxy Setting

It’s the easiest step for fixing Err_Tunnel_Connection_Failed in your Google Chrome browser. If your computer is using a proxy setting, you may encounter this Google Chrome error.

To solve this, you’ll need to change the proxy setting on your computer, and to do so, all you need to do is:

  • Press Win Key + R and open RUN
  • Type inetcpl.cpl in RUN and hit Enter or click the OK button, and it’ll open Internet Properties
inetcpl cpl
  • From Internet Properties, select the Connections tab
  • From the Connection tab, select and click the option LAN Settings
intenet properties connections lan settings
  • Once you click on LAN settings, another window will open, and from there, unselect the option named “Use proxy server for your LAN.” Also, ensure the above option, “Automatically detect settings,” is selected. And then, click on the bottom left button, “OK,” to apply the settings.
lan settings windows

Close all the open windows and restart the computer. Now, open Google Chrome again and see whether Google Chrome connects with the internet without showing the error message ERR TUNNEL CONNECTION FAILED. Mostly, it should get resolved. But, if you still face this error message, move on to another step.

Reset Your Network Settings

Resetting the network settings is another way to resolve the Net Err_Tunnel_Connection_Failed error. Though here, you’ll need to reset the TCP/IP and flush the DNS, and below are the steps for doing the same:

In admin mode, open the command prompt. For the opening, go to the Start menu by pressing the Windows button, and in the Start Search bar, type Command Prompt.

Once the command prompt is displayed within the search result, select and right-click on it and select the option Run as Administrator option.

cmd run as administrator

And once the Command Prompt opens, type the below commands:


Once this entered command executes, restart the computer. After restarting, open Google Chrome and see whether you’re facing Err_Tunnel_Connection_Failed or if it’s fixed. If you still get this error message, move on to the next method.

Change DNS Address

The IPv4 DNS address in the computer should be set for obtaining the DNS server address by default, or else you need to set the DNS address given by the ISP (Internet Service Provider). And, if it hasn’t been set to any, then you’ll face Err_Tunnel_Connection_Failed in Google Chrome.

So, if you want to try setting the DNS address on your computer system to the address of the Google DNS server, then follow the below steps:

  • From the Taskbar at the bottom right side, select the Network icon. And from that, connect with the WiFi network through the PC. Now, please right-click on the Network icon, and from that, select the option Open Network and Sharing Center and open it.
  • Once the window Network and Sharing opens, look at the option View your active networks. And click on the network to which you’re presently connected to.
network and sharing center internet
  • It opens the Internet Connection Status window. In that, select and click on the Properties option:
ethernet status properties
  • Once you click and open the Properties window from that Networking tab, find and select the Internet Protocol Version 4 (TCP/IPv4) option and double-click on it.
internet protocol version4
  • After selecting and opening IPv4, you should check if the DNS is set for obtaining it automatically or has been set to another value. Then, you need to select the DNS server address option and manually enter the Google public DNS server address.
ip v4 properties validate settings
  • Once the DNS address is set, select the option Validate settings upon exit. And then click the OK button. Now, restart the computer, open the Google Chrome browser, and ensure the issue is resolved. If the error persists, go to another step mentioned below.

Clear Your Browser Data

Try to access your internet connection with another browser like Mozilla Firefox. If you aren’t facing err tunnel connection and it’s shown only in Google Chrome, then the browser itself is the reason.

Your browsing data may be creating an error. To resolve the issue, go through below steps:

  • Type Chrome://settings in the Google Chrome browser and hit Enter. It’ll open the Settings option of your Google Chrome browser. And if you want, you can also try opening Google Chrome’s menu, and from there, you can select and go for the Settings option.
chrome settings
  • From the Settings window, go to the Privacy and Security section and select and open the Clear Browsing Data option.
  • A new window will open. Select the data you’re looking to clear from the Chrome browser. Otherwise, select the items from the drop-down menu with the Browsing history, Cookies, and other site data and Cached images and files, and click Clear Data.
clear browsing data chrome
  • Once you clear all the data, close the browser and restart it. And try accessing the internet. If the error is still not resisted and you’re getting Err_Tunel_Connection_Failed, then go to another solution mentioned below.

Reset the Setting of Google Chrome

If the issue still needs to be resolved, you’ll need to reset your Google Chrome browser. For resetting, go through the below steps:

  • Follow the first two steps of the above method and go to the advanced settings.
  • From the Advanced Chrome settings, go to the Reset and clean up section. Click on the option Restore settings to the original defaults. It’ll ask the confirmation that you’re sure to reset your browser. Once you confirm and the reset is completed, you will need to restart your Google Chrome browser and check if the issue is resolved.
reset and clean up setting

Update Your Google Chrome Browser

To ensure that you have the latest version of Google Chrome and avoid receiving error messages, update your Google Chrome browser to the latest version. And if the Google chrome updated version is available, and you haven’t updated it yet, then you can update it by following the below steps:

  • Open your Google Chrome browser from the upper right corner by clicking on the three dots.
  • Go to the help section and click the About Google Chrome option from the list.
  • A new window will open, and Google Chrome will automatically start searching for the updated version. If it’s available, it’ll be updated.
  • Once updated, you’ll need to click on the Relaunch button.
about chrome version

Mostly, this Google Chrome error should get resolved by now. However, if it hasn’t, then you can look through one more solution discussed below.

Browser Extensions Creating Issues

If you still need to get the solution, then it’s most likely that Google Chrome Extension might be creating this issue. Therefore, you’ll require to disable installed extensions one by one. And once the problem is fixed, remove the last extension you disabled and activate other installed Google Chrome extensions.

Further, restart your browser, and your error ERR_TUNNEL_CONNECTION_FAILED should get resolved.

Wrapping Up

Google Chrome error Err_Tunnel_Connection_Failed is one of the commonly seen error messages. So, if you’re getting this error, it’s most likely that Google Chrome will create an issue.

Nonetheless, here we’ve mentioned the solutions that you can go through. Still, it’s suggested that you first ensure this error is displayed only in Google Chrome and not in any other browser. 

Janki Mehta

Janki Mehta

Janki Mehta is a Cyber-Security Enthusiast who constantly updates herself with new advancements in the Web/Cyber Security niche. Along with theoretical knowledge, she also implements her practical expertise in day-to-day tasks and helps others to protect themselves from threats.

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