How to Fix ERR_TUNNEL_CONNECTION_FAILED Error in Chrome

The ERR_TUNNEL_CONNECTION_FAILED error in Chrome typically occurs when the browser cannot establish a tunnel connection to the requested server, often due to proxy or network configuration issues.

Main Causes of ERR_TUNNEL_CONNECTION_FAILED

• Incorrect proxy or VPN settings.
• Network connectivity issues.
• Restrictions from the internet provider or local network.
• Conflicts with Chrome extensions affecting network settings.

Ways to Resolve ERR_TUNNEL_CONNECTION_FAILED

1. Check Proxy Settings

If you’re using a proxy, this error might be due to its configuration. Here’s how to check:

• Open Chrome and go to Settings.
• Select System and click Open your computer’s proxy settings.
• Ensure that the Use a proxy server option is either off or correctly configured.

2. Disable VPN

If you’re using a VPN, temporarily disable it and restart Chrome. Some VPN services may limit access to specific sites, causing this error.

3. Clear Chrome’s Cache and Cookies

Cache and cookies can sometimes interfere with browsing. To clear them:

• Click the three dots in Chrome’s top right corner and go to Settings.
• Navigate to Privacy and Security and select Clear browsing data.
• Select All time, check Cookies and Cached images and files, then click Clear data.

4. Disable Chrome Extensions

Extensions can sometimes cause network conflicts. To disable them:

• Go to Settings → Extensions.
• Turn off all extensions, especially those related to networking or security.
• Restart Chrome to see if the error is resolved.

5. Reset Chrome Settings

If the issue persists, try resetting Chrome’s settings:

• Go to Settings → Reset and cleanup.
• Click Restore settings to their original defaults.