[BUG] Windows Installation Broken

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'm trying to use Powershell to install Claude Code from the command provided on the official website:
irm https://claude.ai/install.ps1 | iex

I am on a fresh install of Windows 11 (ARM). The installer raises no errors and I see the Claude successfully installed message at the end but when I try to run claude no output appears in the terminal (something does temporarily run but there is no visible output and no debug logs)

If I run claude doctor there is no output beyond Checking installation status

I've tried various troubleshooting tips and bug fixes (as there are a lot of other old reports of this sort of behaviour) but nothing has worked. I've also tried the cmd and winget approaches but the behaviour is the same.

What Should Happen?

When installation success message is received, I would expect claude to open the claude code tool in future powershell sessions OR generate a useful error message.

Error Messages/Logs

### Installation logging

Setting up Claude...

✅ Installation Complete!


### When running `claude`
Command appears to start running something
No output appears
No entry in debug file

### When running `claude doctor`
Shows `Checking installation status...`
Command finishes with no further output.


I've checked that the path env vars are set correctly.

Steps to Reproduce

Fresh install of Windows 11 ARM (VM)
Run irm https://claude.ai/install.ps1 | iex
Restart terminal.
Run claude

Claude Model

Other

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.14

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

_No response_