What does the 'Cloudflare SSL Error: Bad Cert Domain' message indicate?

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Grade: Education Subject: Support
What does the 'Cloudflare SSL Error: Bad Cert Domain' message indicate?
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The 'Cloudflare SSL Error: Bad Cert Domain' message signifies that Cloudflare is unable to validate the SSL certificate presented by your web server for the domain you're trying to access. This means either the certificate is expired, not properly installed on your server, doesn't match the domain name, or is otherwise invalid from Cloudflare's perspective. It's a critical error impacting secure connections.