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Apart from errors like ERR_FILE_NOT_FOUND, Err Tunnel Connection Failed is also a common issue in Chrome browser. Refer to this Mytour article to learn how to fix Err Tunnel Connection Failed in Chrome browser.
1. Err Tunnel Connection Failed error on Chrome
VPN or Proxy servers attempt to safeguard or anonymize user identity by separating header data from user requests to access websites. Typically, this poses no issues, allowing users to connect to websites without any trouble.
However, discrepancies between expected and provided data can occasionally result in the ERR_TUNNEL_CONNECTION_FAILED error on the Chrome browser.
Simply put, the cause of the ERR_TUNNEL_CONNECTION_FAILED error on Chrome could stem from the browser's inability to resolve VPN or Proxy connections.
2. Fixing the Err Tunnel Connection Failed Error on Chrome Browser
The simplest way to fix the Err Tunnel Connection Failed error on Chrome is to disable the Proxy server on your computer, then reload the website you're trying to access.
However, if you wish to continue using VPN or Proxy servers to connect to the Internet, you can apply alternative error-fixing methods from methods 2 to 5 to resolve the Err_Tunnel_Connection_Failed error.
Method 1: Disable Proxy Server
As mentioned above, this solution is suitable if you want to connect directly to the Internet and prefer not to use VPN or Proxy connections.
Click on the three-dot icon aligned horizontally at the top right corner of the screen, then select Settings from the menu.
In the Settings window, scroll down to find and click on Advanced.
Scroll down to the System section, locate and click on Open Proxy Settings
In the Internet Properties window, click on the LAN Settings button within the Connections tab.
In the LAN Settings window, uncheck the option Use Proxy Server for LAN and check the option Automatically detect settings, then click OK.
Restart your computer and try accessing the website you want to visit to see if the Err Tunnel Connection Failed error persists.
Method 2: Check Proxy IP Address, Password, and Port
If you intend to continue using proxy connections, first ensure that you are using the correct IP address, password, and port for the Internet Proxy connection on your computer.
Also, ensure you are using the correct username and password.
- IP Address: To check the IP address, try accessing another website through the Proxy server. If you can access another website, it means the IP address is correct.
- Port: Most proxies use port 80, but some proxy providers may use different ports.
- Username / Password: These are the credentials you already know.
Method 3: Disable Automatic Detection of Settings
If the browser is set to automatically detect proxy settings, it will apply default settings within the operating system.
Proxy settings on Windows computers may be better optimized for Internet Explorer or Edge browsers rather than for Google Chrome.
By turning off the automatic detection option to allow Chrome to use its own settings or use the default settings from the proxy provider.
Click on the three-dot icon aligned horizontally at the top right corner of the screen, then select Settings.
In the Settings window, scroll down to find and click on Advanced.
Scroll down to find and click on the Open Proxy Settings option within the System section.
In the next window, click on the Connections tab, then click on the LAN Settings button.
In the LAN Settings window, uncheck the option Automatically detect settings, then click OK.
Finally, restart your computer and check if the Err Tunnel Connection Failed error on the Chrome browser persists.
Method 4: Reset TCP/IP and Clear DNS
Right-click on the Start button, select Command Prompt (Admin) to open a Command Prompt window with Admin privileges.
In the Command Prompt window, enter each command below one by one in order, press Enter after each command:
netsh winsock reset
netsh int ip reset
ipconfig /release
ipconfig /renew
ipconfig /flushdns
ipconfig /registerdns
Finally, restart your computer to apply the changes and check if the Err Tunnel Connection Failed error on Chrome persists.
Method 5: Contact your proxy provider for assistance
If you've tried the above methods and the errors persist, the final solution is to contact your proxy service provider for assistance.
This article from Mytour has just guided you through some ways to fix the Err Tunnel Connection Failed error on Chrome. Additionally, readers can explore other articles on Mytour to learn how to fix ERR_FILE_NOT_FOUND error on Chrome. You will find various methods to fix ERR_FILE_NOT_FOUND error on Chrome and discover the most suitable approach for you.
