How to fix a missing or invalid SSL certificate

An invalid SSL certificate is often caused by DNS mismatch, hostname mismatch, missing coverage, or an expired cert.

Overview

What this guide covers

Check pointing, hostname coverage, and certificate status before treating it as an application issue.

Quick checks

Before you make changes

Root and www both point correctly
HTTPS responds on port 443
Certificate subject matches the hostname
Certificate is not expired

Steps

Recommended process

Confirm the domain points to the correct hosting destination first.
Check whether the certificate covers the exact hostname in use.
Review certificate expiry and issuance status.
Reissue the certificate after DNS is correct if needed.

Need more help?

Continue in the support portal

If the issue is still unresolved after the checks above, return to the support home page and use the domain checker or sign in to open a support case.

Back to support home