This tutorial contains instructions to fix the Chrome error: “This webpage is not available. ERR_TUNNEL_CONNECTION_FAILED. This webpage is not available”.
The error “tunnel connection failed” in Chrome, means that your browser cannot establish a connection with the website you try to reach. The error can be due to several reasons, (e.g. invalid Proxy settings, Internet connection is lost, the website doesn’t exist, Network problems, etc.), so in this tutorial you will find various methods to fix the issue.
To resolve the Chrome error “ERR_TUNNEL_CONNECTION_FAILED” follow the instructions below:
How to FIX: Chrome “ERR TUNNEL CONNECTION FAILED”.
Advice: Before proceeding to apply the methods below try the following:
1. Restart your Internet Router.
2. Try to visit other websites, to make sure that your Internet connection is working.
3. If you own another computer/device in your place, try to visit the website where your receive the “ERROR_TUNNEL_CONNECTION_FAILED” error, in order to make sure that the site you ‘re trying to visit is not blocked from your ISP.
4. If you have connected to Internet through a VPN connection, then disconnect from it.
5. Temporarily disable the Firewall application (if you have one).
Method 1. Check Proxy Settings.
The Chrome error “ERR TUNNEL CONNECTION FAILED” usually appears if you have incorrectly configured the PROXY settings on your device. To check the PROXY settings:
1. Navigate to Control Panel and open the Internet Options, OR, ALTERNATELY, press the Windows 
+ R keys to open the Run command box, type control inetcpl.cpl and press Enter.
2. Select the Connections tab ad open the LAN settings,
3. Now proceed as follows, according your case:
Case A. If you are USING a PROXY server to connect to the Internet, make sure that the Automatically detect settings is unchecked and you have set the IP address and port of the PROXY server correctly.
Case B. If you are NOT USING a PROXY server to connect to the Internet, ensure that the Automatically detect settings is checked and that the “Use a proxy server for your LAN” option is unchecked.
4. Click OK twice when done, and then check your Internet Connection.
Method 2. FIX Chrome ‘ERR_TUNNEL_CONNECTION_FAILED’ by Resetting the TCP/IP Settings & WINSOCK.
1. Open Command Prompt in Administrative mode. To do that:
1. At Search box, type cmd or command prompt
2. Right click at Command Prompt result and select Run as Administrator.
2. In Command Prompt, type the following command and press Enter.
- ipconfig /release
3. Now type the following commands in order (press Enter after each command).:
- ipconfig /flushdns
- ipconfig /renew
- netsh winsock reset
3. Restart your computer.
Method 3. Change DNS settings.
The next method to resolve the Google Chrome error “ERR_TUNNEL_CONNECTION_FAILED” is to change the DNS Settings and to use Google’s Public DNS Servers. To do that:
1. Right click on the active Network icon in Taskbar (or go to to Windows Control Panel) and click Network and Sharing Center
![image_thumb[14]](https://qnet88.com/wp-content/uploads/2023/04/image_thumb14_thumb-1-1.png "image_thumb[14]")
2. Select the active Network Card and then click Change adapter options.
3. Right click on your active Network Adapter and select Properties.
4. Select the ‘Internet Protocol Version 4 (TCP/IPv4)‘ and click Properties
![image_thumb[18]](https://qnet88.com/wp-content/uploads/2023/04/image_thumb18_thumb-1-1.png "image_thumb[18]")
5a. Check the “Use the following DNS server addresses:” radio button.
5b. Type the following DNS server addresses (Google’s public DNS Servers) and click OK.
- 8.8.8.8
- 8.8.4.4
6. Restart your computer.
Method 4. Fix ERR TUNNEL CONNECTION FAILED by Resetting Chrome Settings.
To reset Chrome to the default installed settings:
1. Click on Chrome’s menu 
icon at the upper right corner) and choose Settings.
2. At Settings page, scroll down and click to Show Advanced Settings.
3. At end of the page, click Restore settings to their original defaults.
4. Finally click Reset settings.
5. Restart Chrome.
Method 5. Scan your computer for Malware & Viruses.
The last method to fix the error ERR_TUNNEL_CONNECTION_FAILED in Chrome, is to ensure that your system is virus/malware free. For that task follow the instructions in this guide: How To Scan Your Computer for Viruses and other Malicious Programs.
That’s all folks! Did it work for you?
Please leave a comment in the comment section below or even better: like and share this blog post in the social networks to help spread the word about this solution.
