[BUG] Claude Code doesn't work with `NODE_OPTIONS=--use-system-ca`

Open 💬 2 comments Opened Jun 28, 2026 by GRiMe2D

Preflight Checklist

  • [x] I have searched existing issues and this hasn't been reported yet
  • [x] This is a single bug report (please file separate reports for different bugs)
  • [x] I am using the latest version of Claude Code

What's Wrong?

Enterprise setup forces to use Netskope and it installs custom CA. In order to work I have to put export NODE_OPTIONS=--use-system-ca in zshrc. But that ENV variable conflicts with Claude Code 2.1.181 (Homebrew latest)

The only solution is to unset NODE_OPTIONS env variable before starting Claude Code.

What Should Happen?

Claude Code should respect NODE_OPTIONS=--use-system-ca env variable in order to allow both NodeJS and Claude Code work

Error Messages/Logs

> Unable to connect to API: SSL certificate verification failed. Check your proxy or corporate SSL certificates

Steps to Reproduce

  1. Use some custom CA (Netskope for example)
  2. Set NODE_OPTIONS=--use-system-ca env variable
  3. Verify that plain nodejs can access SSL

``
node -e 'fetch("https://example.com").then(r => console.dir(r))'
`
`
Response {
[Symbol(state)]: {
aborted: false,
rangeRequested: false,
timingAllowPassed: true,
requestIncludesCredentials: true,
type: 'default',
status: 200,
timingInfo: {
startTime: 82.898083,
redirectStartTime: 0,
redirectEndTime: 0,
postRedirectStartTime: 82.898083,
finalServiceWorkerStartTime: 0,
finalNetworkResponseStartTime: 226.452792,
finalNetworkRequestStartTime: 175.629708,
endTime: 0,
encodedBodySize: 0,
decodedBodySize: 0,
finalConnectionTimingInfo: [Object]
},
cacheState: '',
statusText: 'OK',
headersList: HeadersList {
cookies: null,
[Symbol(headers map)]: [Map],
[Symbol(headers map sorted)]: null
},
urlList: [ URL {} ],
body: { stream: [ReadableStream], source: null, length: null }
},
[Symbol(headers)]: Headers {}
}
``

  1. Open Claude Code
  2. Say Hi
  3. Claude Code responds

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.181 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

iTerm2

Additional Information

Disabling NODE_OPTIONS will fix Claude Code. But ordinary node execution now is broken. The previous fetching of https://example.com will fail due to SSL cert mismatch

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