Enterprise network configuration changednetwork-config
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Upstream edited this page at 6 Oct 2026 02:44 UTC, give or take a minute or two: the time comes from Anthropic’s own sitemap rather than from a commit. This site recorded the change at 6 Oct 2026 03:07 UTC.
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5858## CA certificate store
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60By default, Claude Code trusts both its bundled Mozilla CA certificates and your operating system's certificate store. Reading the OS store requires a runtime with `tls.getCACertificates`: the native installer always has it, and npm installs need Node 22.15 or later. On older Node versions, only the bundled set and `NODE_EXTRA_CA_CERTS` apply. Enterprise TLS-inspection proxies work without additional configuration when their root certificate is installed in the OS trust store and the runtime can read it.
60By default, Claude Code trusts both its bundled Mozilla CA certificates and your operating system's certificate store. Reading the OS store requires a runtime with `tls.getCACertificates`: the native installer always has it, and npm installs need Node 22.15 or later. On older Node versions, only the bundled set and `NODE_EXTRA_CA_CERTS` apply. Enterprise TLS-inspection proxies work without additional configuration when their root certificate is installed in the OS trust store and the runtime can read it. If such a proxy mishandles gzip-compressed request bodies, set [`CLAUDE_CODE_GZIP_REQUEST_BODIES=0`](/docs/en/env-vars) to turn off compression for Claude API, telemetry, and artifact publish requests.
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6262`CLAUDE_CODE_CERT_STORE` accepts a comma-separated list of sources. Recognized values are `bundled` for the Mozilla CA set shipped with Claude Code and `system` for the operating system trust store. The default is `bundled,system`.
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