[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?

RPC error: ensure user: useradd failed: exit status 12: useradd: cannot create directory /sessions/dreamy-trusting-hypatia

this will pop if i use cowork

What Should Happen?

I cant use my cowork

<img width="612" height="178" alt="Image" src="https://github.com/user-attachments/assets/fd64a7d2-7559-4629-adff-c2b79d1c37a0" />
<img width="674" height="192" alt="Image" src="https://github.com/user-attachments/assets/69a4088c-029f-4b15-bae6-bf4df3e9b763" />

Error Messages/Logs

RPC error: ensure user: useradd failed: exit status 12: useradd: cannot create directory /sessions/dreamy-trusting-hypatia

Steps to Reproduce

1. use/type in cowork
2. then this pops up

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Claude Opus 4.7

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_