How to Fix the NET::ERR_CERT_AUTHORITY_INVALID Error

The NET::ERR_CERT_AUTHORITY_INVALID error can disrupt access to secure websites, signaling an issue with the site’s SSL certificate. Whether you’re managing a website on a VPS, securing domains with SSL, or operating a dedicated server, this guide provides clear steps to resolve the error and keep your site accessible. We’ll also include practical examples to help you troubleshoot effectively.

Why Does the NET::ERR_CERT_AUTHORITY_INVALID Error Occur?

This error occurs when a browser cannot verify a website’s SSL certificate. Common causes include:

  • Expired or self-signed SSL certificate.

  • Certificate issued by an unrecognized authority.

  • Misconfigured SSL certificate on the server.

  • Incorrect device date/time or network issues.

How to Fix the NET::ERR_CERT_AUTHORITY_INVALID Error

1. Check SSL Certificate Validity

Ensure that your SSL certificate is still valid. You can check this by clicking on the padlock icon next to the URL and viewing the certificate details.

2. Renew Your SSL Certificate

If your SSL certificate has expired, you need to renew it through your certificate authority or hosting provider.

3. Verify SSL Certificate Configuration

Make sure that your SSL certificate is properly installed and configured on your web server. Some browsers may reject misconfigured certificates.

4. Check Your Device’s Date and Time

An incorrect date or time on your computer can cause SSL errors. Ensure your system’s date and time are correctly set.

5. Clear SSL Cache and Browser Cookies

Browsers store SSL certificates and may cause errors if outdated information is used. Try clearing your SSL cache and deleting cookies.

6. Temporarily Disable Browser Extensions

Certain browser extensions can interfere with SSL connections. Try disabling extensions temporarily and reload the page.

7. Use a Different Network

If you are using a public or corporate Wi-Fi network, certain network restrictions may block SSL certificates. Try switching to another network to see if the issue persists.

Preventing the NET::ERR_CERT_AUTHORITY_INVALID Error in the Future

  • Use an SSL certificate from a recognized certificate authority.
  • Ensure your server is correctly configured to use HTTPS.
  • Regularly update your SSL certificate before it expires.
  • Check your network configuration and avoid suspicious proxies.
  • Consider using managed hosting for automatic SSL management and security updates.

Conclusion

The NET::ERR_CERT_AUTHORITY_INVALID error is a manageable issue with straightforward fixes. By following these steps, checking your SSL setup, and applying the practical examples, you can restore secure access to your website. Whether using VPS, dedicated servers, or managed hosting, a valid and well-configured SSL certificate ensures a trusted, secure browsing experience for your users.