SSL Verification Error: Why the Certificate Can’t Be Trusted and How to Fix It

• 23 June 2026
• by: Hannah Cole
• in: SSL Certificates
• Tags: ca certificate bundle, certificate chain, https troubleshooting, OpenSSL, ssl verification error
• note: no comments

An SSL verification error means the certificate was reached but couldn’t be trusted. Learn the real causes — outdated CA bundle, incomplete chain, untrusted CA — and how to fix them with openssl and curl.

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