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ERR_TLS_CERT_ALTNAME_INVALID

tls cert altname invalid

What does this code mean?

Code ERR_TLS_CERT_ALTNAME_INVALID · An issue reported by Node.js.

Official explanation · Original text

While using TLS, the host name/IP of the peer did not match any of the subjectAltNames in its certificate.

Troubleshooting and diagnostic links

First check that the document's product, version, and environment match your situation.

Source and terms of use

Errors | Node.js v26.13.1 Documentation ↗

Creator: Node.js contributors; Joyent, Inc. and other Node contributors
License: MIT License (Node.js documentation)
Checked on: 2026-11-12

Modifications: English prose extracted; whitespace normalized; Korean context and classified official links added. Python code examples not redistributed.

Source details · Original licenses and notices