This diagnostic tool identifies and explains the 'Invalid SSL certificate' error (code 526), which prevents visitors from accessing a website securely. It is for website owners, administrators, and developers who need to troubleshoot and resolve this specific HTTPS security failure.

• Error Diagnosis: Clearly states the cause—an invalid, expired, or mismatched SSL certificate on the origin server.
• Actionable Guidance: Provides specific steps for website owners to contact their hosting provider and resolve the certificate issue.
• Visitor Instructions: Informs end-users when an error is encountered, advising them to try again later.
• Technical Details: Includes diagnostic information like timestamps and Cloudflare Ray IDs to aid in troubleshooting with support teams.
• Security Focus: Explains that the error occurs because the server's certificate did not pass validation, emphasizing the importance of a valid certificate from a trusted Certificate Authority.