Security & SSL

Certificate expiration, TLS errors, and vulnerability issues.

Guides

SSL Certificate ExpiredDiagnose and resolve SSL certificate expiration issues. Check certificate validity, renewal status, and HTTPS configuration.

SSL Certificate Chain IncompleteFix incomplete SSL certificate chains that cause trust errors in browsers. Diagnose missing intermediate certificates.

TLS Handshake FailureDiagnose and fix TLS handshake failures caused by protocol mismatches, cipher suite incompatibilities, and certificate errors.

Weak Cipher SuitesIdentify and disable weak cipher suites on your server. Improve SSL/TLS security by enabling modern, strong encryption algorithms.

HSTS Not EnabledLearn why HSTS is important, how to enable it, and how to fix common HSTS configuration mistakes for better HTTPS security.

Certificate Hostname MismatchFix SSL certificate hostname mismatch errors (ERR_CERT_COMMON_NAME_INVALID). Diagnose CN and SAN configuration issues.

Self-Signed CertificateUnderstand why self-signed certificates cause trust errors and how to replace them with trusted CA-issued certificates.

TLS Version DeprecatedUpgrade from deprecated TLS 1.0 and TLS 1.1 to modern TLS 1.2/1.3. Fix compliance and security issues with TLS version configuration.

Insecure RedirectDetect and fix insecure redirects that expose users to man-in-the-middle attacks. Ensure proper HTTPS redirect chains.