SSL Certificate Validation Failure on HTTPS Calls
Application fails to make HTTPS requests to external services, throwing SSL certificate validation errors. In development with self-signed certificates it works (validation disabled), but in production with proper certificates it fails.
Certificate is valid and properly installed but the application doesn't trust it.
Error Messages You Might See
Common Causes
- Self-signed certificate not added to application's trust store
- Certificate chain incomplete, missing intermediate certificates
- System trust store not being used by application (using custom keystore)
- Hostname in certificate doesn't match requested domain
- Certificate expired or not yet valid
How to Fix It
For self-signed certs in dev only, add to keystore: keytool -import -alias myserver -file cert.pem -keystore truststore.jks. Configure application: -Djavax.net.ssl.trustStore=truststore.jks -Djavax.net.ssl.trustStorePassword=password. For production: use proper CA-signed certificate. Verify certificate: openssl x509 -in cert.pem -text -noout
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Get HelpFrequently Asked Questions
How to import self-signed cert into Java?
keytool -import -alias name -file cert.pem -keystore truststore.jks -storepass password. Then use in application startup.
How to verify certificate details?
openssl x509 -in cert.pem -text -noout shows expiration, issuer, subject, and validity dates.
Should certificate validation be disabled in production?
No. Never disable validation in production. Fix the certificate instead (use proper CA, add to trust store).