SSL & HTTPS: what this section covers
SSL & HTTPS focuses on the TLS handshake that occurs before a browser can receive an application response or redirect. It checks certificate dates, SAN hostname coverage, root/www differences, supported TLS behavior, HSTS and insecure resource references that can remain after a certificate itself is valid.
Signals that matter for SSL and HTTPS
The pages here interpret TLS, certificate and HTTPS evidence through the following search tasks and configuration concepts. They are included because they help separate causes, not to repeat a keyword a fixed number of times.
- Ssl tools — Test the hostname actually requested, its certificate dates and SAN coverage, and the TLS handshake. Root and www can serve different certificates.
- Https checker — Record the public status, final URL and relevant response headers. A working DNS answer does not prove that the application is serving a genuine website response.
- Certificate troubleshooting — Test the hostname actually requested, its certificate dates and SAN coverage, and the TLS handshake. Root and www can serve different certificates.
Which SSL & HTTPS check to start with
Use Certificate Checker for identity/chain/hostname problems, Expiry Checker for renewal monitoring, and Mixed-Content Checker when the page loads over HTTPS but the browser still warns about insecure subresources. If HTTP works and HTTPS does not, test TLS before changing DNS.
Diagnosis first, raw evidence second
The interface surfaces the highest-impact explanation and its confidence before raw protocol output. For SSL and HTTPS, that means a visitor can see what probably failed and what to change while an advanced user can still inspect the DNS, certificate, header, resolver or provider evidence behind the conclusion.
What a repaired SSL and HTTPS problem should look like
Verify the exact failing hostname. A certificate for example.com does not automatically cover www.example.com, and a redirect from www cannot happen safely until www itself completes TLS. Repair certificate/service binding first, then enforce canonical HTTPS redirects.
Validate the TLS, certificate and HTTPS change
HTTPS should complete for the exact hostname, the certificate should be valid for that hostname, and root/www should follow the intended canonical redirect without a TLS error. Re-run the same focused tool that exposed the problem so a dashboard status, cache or unrelated healthy signal is not mistaken for proof of the repair.
Technical references
Provider interfaces and standards change. These references are used to verify the technical behavior described above.