[BUG] Installing Claude Code unable to get local issuer certificate

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?

I am trying to install claude code to my corporate workstation. The workstation sits behind a proxy. During install I get a message the installation failed and unable to get local issuer certificate. I Windows CMD + PowerShell but I got similar errors for both. Reading through the docs I set NODE_EXTRA_CA_CERTS to point to my proxy certs but that didn't work.

What Should Happen?

Claude Code should use my proxy certs I defined with the variable NODE_EXTRA_CA_CERTS and install correctly.

Error Messages/Logs

`
irm https://claude.ai/install.ps1 | iex
Setting up Claude Code...

✘ Installation failed

Failed to fetch version from https://storage.googleapis.com/claude-code-dist-86c565f3-f756-42ad-8dfa-d59b1c096819/claude-code-releases/latest: unable to get local issuer certificate


Try running with --force to override checks

✅ Installation complete!
`

Steps to Reproduce

1. Be on a corporate network with Palo ALto SSL inspection
2. Set Set-Variable -Name "NODE_EXTRA_CA_CERTS" -Value "C:\Users\xxxx\Certs\Proxy_Certificates\PEM\proxy.pem"
3. Run installer irm https://claude.ai/install.ps1 | iex

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

latest

Platform

AWS Bedrock

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

I created a settings.json inside the .claude directory and set the variable there as well but that did not work.