How to Fix “No Internet Connection ERR_PROXY_CONNECTION_FAILED” Error

The ERR_PROXY_CONNECTION_FAILED error appears when the browser cannot connect to the proxy server. This issue is often related to network or browser settings and can be triggered by several causes, including incorrect proxy settings, network connectivity issues, or even antivirus blocking.

Key Steps to Resolve the Issue

1. Check Proxy Settings

To ensure your proxy settings are correct, follow these steps:

• Open the Control Panel and go to Internet Options or Network and Internet Settings.
• Select the Connections tab and click LAN settings.
• Uncheck the Use a proxy server for your LAN option (if selected) and check Automatically detect settings.
• Click “OK” to save the changes.

2. Disable Antivirus or Firewall

Some antivirus programs and firewalls may block the connection through a proxy. Temporarily disable your antivirus and firewall to see if this resolves the issue. If the error disappears, configure your antivirus to work properly with proxy settings or add your browser to the exception list.

3. Restart Router and Check Internet Connection

A simple router reboot can sometimes restore the internet connection if the issue was due to a temporary glitch. If the problem persists, try checking the connection on other devices to determine if it’s device-specific.

4. Reset or Update Your Browser

Try using a different browser or reset your current one. In Chrome, you can go to Settings > Reset and Cleanup > Restore settings to their original defaults.

5. Check System Files and Windows Updates

Sometimes, corrupted system files can cause connection errors. Run the sfc /scannow command in the command prompt with administrator privileges. Also, ensure your system is up to date to eliminate potential compatibility and security issues.