This error happens when the domain name in the SSL certificate (Common Name) doesn’t match the domain you are visiting.

Common causes include:

  • Visiting www.yourdomain.com but the certificate is issued for yourdomain.com only (or vice versa).
  • Using an IP address instead of a domain name.
  • Certificate issued for a different domain.

To fix this:

  • Ensure your certificate covers all variants of your domain (consider a wildcard or SAN certificate).
  • Use the correct domain URL in the browser.
  • Contact Aviumshost support for assistance if unsure.