This error is a simple connection error which you will encounter while browsing internet in Google Chrome. Error ERR_TUNNEL_CONNECTION_FAILED occurs when Chrome is unable to render the proxy response for some sites. Error ERR_TUNNEL_CONNECTION_FAILED is the most common error experienced by Chrome users. Other possible reasons for the occurrence of this error could be:
- Change in the LAN settings.
- Browsing data and cache may block your connection.
- Proxy address.
Fixing ERR_TUNNEL_CONNECTION_FAILED Error
Method 1: Change Network Settings
- In Chrome click on the More Options menu and choose Settings.
- Go to Show advanced settings.
- Go to Network section and click on Change proxy settings.
- Click on LAN settings in connections tab.
- Check the box that said Automatically detect settings.
- Uncheck Use a proxy server for your LAN and click OK.
- Restart your PC.
Method 2: Reset Network Settings
- Type cmd in the search box and then right click on Command Prompt and select Run as administrator.
- Execute the following commands one by one:
netsh int ip reset
netsh winsock reset
- After doing so Restart your computer.
Method 3: Clear Browser Cookies & Cache Data
- Open Google Chrome and type chrome://settings/cookies in the search bar and hit Enter.
- Now click the Remove all and then click Done button.
- Now check all the options inthe box then click on the Clear browsing data.
- Close the Google Chrome browser and re-open the browser for checking the error.
Method 4: Change DNS
- Right click on the network option which you will see on the bottom right corner of your screen and select Open Network and Sharing Center.
- Click on the internet connection you are using.
- Click on Properties.
- Double-click on Internet Protocol Version 4 (TCP/IPv4) to change the DNS server.
- Click on Use the following DNS server addresses:and set the values as follows in the dialog box:
Preferred DNS server: 220.127.116.11
Alternate DNS server: 18.104.22.168
- Press OK and exit.
Method 5: Update or Reinstall Chrome
- Open Chrome.
- In the top right, click on the three vertical dots button to open menu.
- Go to help > About Google Chrome.
- Google Chrome automatically detects if there’s an update available:
- If yes, follow the on-screen instruction to finish the update.
- If no, delete Chrome and reinstall it.