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How to Fix ERR_UNEXPECTED_PROXY_AUTH

Topic: Google Chrome Connection Errors | Status: Updated

What is this error?

The "ERR_UNEXPECTED_PROXY_AUTH" error in Google Chrome typically occurs when the browser encounters issues related to proxy server authentication. This can happen if your network settings are misconfigured, or if the proxy server is not responding as expected.

How to Fix It

To resolve the "ERR_UNEXPECTED_PROXY_AUTH" error, follow these troubleshooting steps:
  1. Check Proxy Settings: Open Chrome and go to Settings by clicking on the three dots in the top-right corner. Scroll down to "Advanced" and select "System". Click on "Open your computer's proxy settings" and ensure that the configuration is correct or set it to "No proxy" if you do not require a proxy.
  2. Disable Proxy Extensions: Some extensions can interfere with proxy settings. Go to the Extensions page (chrome://extensions) and disable any that relate to proxies.
  3. Clear Browser Data: Go to Settings, then "Privacy and security", and select "Clear browsing data". Choose a time range and make sure to check "Cached images and files" and "Cookies and other site data", then click "Clear data".
  4. Reset Network Settings: Open Command Prompt (Run as Administrator) and type the following commands one by one, pressing Enter after each:
    • ipconfig /release
    • ipconfig /renew
    • ipconfig /flushdns
  5. Disable VPN Software: If you are using a VPN, disable it temporarily to see if it resolves the issue, as VPNs can sometimes interfere with proxy settings.
  6. Restart Your Router: Turn off your router, wait for about 30 seconds, and turn it back on. This can resolve connectivity issues related to the network.
Disclaimer: This is an educational guide. We are not responsible for data loss. Always backup your system.

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