copilot command silently fails on Windows due to getCACertificates('system') error #1250

Describe the bug

The copilot CLI command silently exits without any output or error message on Windows 11 (on my machine). No error is displayed, making it very difficult to diagnose the issue.

Affected version

0.0.400

Steps to reproduce the behavior

1. Install GitHub Copilot CLI: npm install -g @github/copilot
2. Run copilot command: copilot
3. Command exits immediately with no output

Expected behavior

The CLI should either:

• Work correctly
• Display a meaningful error message if something fails

Additional context

Investigation
Running the script directly reveals the underlying error:

node "C:\Users\...\AppData\Roaming\npm\node_modules\@github\copilot\index.js"

node:tls:138
  systemCACertificates ||= ObjectFreeze(getSystemCACertificates());

Error: X509 to PEM conversion
    at cacheSystemCACertificates (node:tls:138:41)
    at Module.getCACertificates (node:tls:193:14)
    at Hcl (file:///C:/Users/.../AppData/Roaming/npm/node_modules/@github/copilot/index.js:150:9436)
    at ohn (file:///C:/Users/.../AppData/Roaming/npm/node_modules/@github/copilot/index.js:150:8933)
    at ihn (file:///C:/Users/.../AppData/Roaming/npm/node_modules/@github/copilot/index.js:3188:2888)
    at file:///C:/Users/.../AppData/Roaming/npm/node_modules/@github/copilot/index.js:3849:955

Node.js v24.13.0

Related issues

nodejs/node#61636 — Upstream issue about getCACertificates('system') failing without useful error information on Windows