Security headers check
The certificate is valid for the host
The TLS handshake succeeds, so the chain is trusted and the hostname matches.
high severitysec.tls-certificate
Run this check on your site
Runs just this check in quick mode. The report opens with the evidence and the fix.
Why it matters
A browser that cannot verify the certificate shows a full page warning, and every link on the site becomes a risk to click.
How to fix it
Serve the site with a certificate that covers the hostname and chains to a trusted root. Renew it before it expires.
The details
- Category
- Security headers
- Severity of a failure
- high
- Confidence
- medium
- Needs a browser
- No
- Check id
- sec.tls-certificate