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How to Fix ERR_UNSUPPORTED_CERTIFICATE

Topic: Google Chrome Connection Errors | Status: Updated

What is this error?

ERR_UNSUPPORTED_CERTIFICATE is an error that occurs in Google Chrome when the browser encounters an SSL certificate that is considered invalid or unsupported. This typically happens due to certificate format issues or when the certificate does not match the domain being accessed.

How to Fix It

  1. Check the URL: Ensure that the website URL is correctly spelled and does not include any typographical errors.
  2. Update Chrome: Ensure your Google Chrome browser is up to date. Go to the menu (three dots at the top right) -> Help -> About Google Chrome to check for updates.
  3. Clear Browsing Data: Open Chrome settings, navigate to Privacy and Security, then select Clear browsing data. Choose to clear cached images and files, then restart Chrome.
  4. Check Date and Time Settings: Ensure your deviceโ€™s date and time are set correctly, as incorrect settings can prevent secure connections. Update if necessary.
  5. Disable Extensions: Some browser extensions may interfere with SSL connections. Disable extensions by going to the menu -> More tools -> Extensions, then toggle off each extension to test connectivity.
  6. Access via HTTP: If the website supports HTTP, try accessing it without HTTPS. This can occasionally bypass SSL issues temporarily.
  7. Contact Website Support: If the error persists, contact the website's support team to notify them of the issue. They may need to update or reinstall their SSL certificate.
Disclaimer: This is an educational guide. We are not responsible for data loss. Always backup your system.