[BUG]

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?

macOS with Apple Silicon (ARM)
Cowork error: "Claude Code process exited with code 127"
VM gets IP 172.16.10.3 but the virtual network interface is never created on the host

What Should Happen?

idk

Error Messages/Logs

Something went wrong
HL
Try sending your message again. If it keeps happening, share feedback so we can investigate.

Details
Claude Code process exited with code 127
You can restart the conversation from an earlier message.

Steps to Reproduce

1. Open Claude Desktop app on macOS (Apple Silicon/ARM)
2. Go to Cowork tab
3. Create any new task
4. Observe: "Claude Code process exited with code 127" error immediately

Diagnostics:

• Claude Code is correctly installed at /usr/local/bin/claude (v2.1.121)
• VM bundle exists at ~/Library/Application Support/Claude/vm_bundles/claudevm.bundle
• VM gets assigned IP 172.16.10.3 but the virtual network interface is never created on the host Mac
• ping 172.16.10.3 results in 100% packet loss
• No 172.16.x.x interface appears in ifconfig output
• The claude binary inside the VM is a Linux ELF ARM64 binary (correct) but unreachable

Claude Model

Other

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.121 (Claude Code)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_