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n8n errors / Connectivity

self-signed certificate in certificate chain

platform: n8n / category: Connectivity / code: SELF_SIGNED_CERT_IN_CHAIN

Cause

An intermediate certificate in the server's TLS chain is self-signed or issued by a private CA n8n does not trust.

Fix

Enable 'Ignore SSL Issues' in the HTTP Request node, or 'Allow Unauthorized Certificates' for DB/SMTP nodes. On Docker, mount the internal CA cert and set NODE_EXTRA_CA_CERTS=/path/to/ca.crt in the container. Avoid global NODE_TLS_REJECT_UNAUTHORIZED=0 in production - scope the bypass to the credential.

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