Browser security errors › Firefox
SSL_ERROR_BAD_CERT_DOMAIN: how to fix it on your website
Firefox's version of a name mismatch: the certificate is not valid for the domain being visited.
What your visitors see
'Warning: Potential Security Risk Ahead'.
Common causes
- Hostname missing from the certificate
- Wrong default certificate served
- Domain moved to a host without its certificate
How to fix it
- Reissue the certificate with all hostnames
- Fix SNI or virtual host configuration
- Redirect extra hostnames to the covered one
Check your certificate and TLS setup
Korrali Web scans your site for certificate, TLS and security header problems and can monitor it so you hear about expiry before visitors do.