No TLS connection to the domain on port 443 could be made.

TLS_UNAVAILABLE · Severity: Error

• ErrorTLS_UNAVAILABLE

  No TLS connection to the domain on port 443 could be made.

  The check could not complete a TLS handshake with the domain on port 443. The reason in the evidence says where it stopped: the name has no address, the address is not public, the connection was refused or timed out, or the handshake failed. Browsers and API clients fail in the same way.

  Recommendation: Make sure the domain has an A or AAAA record that points to a server that accepts TLS 1.2 or newer on port 443.

Reported by

• Site health check
• TLS certificate check

Available through the API

• Site health check API
• TLS certificate check API

Related findings

• Error TLS_UNTRUSTED The TLS certificate does not chain to a trusted certificate authority.
• Error TLS_CERT_EXPIRED The TLS certificate has expired.
• Info TLS_CERT_EXPIRING The TLS certificate expires within 30 days.
• Warning TLS_CERT_EXPIRING_SOON The TLS certificate expires in less than 14 days.
• Error TLS_HOSTNAME_MISMATCH The TLS certificate is not valid for the domain name.
• Warning TLS_WEAK_KEY The TLS certificate uses a weak public key.

All findings