[BUG] Sandbox stuck for over 30 hours

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?

Cowork sandbox stuck for 30+ hours — session cannot be recovered
Mac OS Sonoma 14.8, desktop app (latest version)
I'm experiencing a persistent issue with the Cowork desktop app where the sandbox environment has been stuck for over 30 hours and cannot recover automatically.
Error messages:

bash failed on resume, create, and re-resume.
resume: RPC error: failed to mount /mnt/.virtiofs-root/shared/Users/****/Documents/Claude/Projects/**as *****: source path is not accessible: stat ...: operation not permitted
create: RPC error: ensure user: user eloquent-lucid-cori already exists unexpectedly: uid=1014 gid=1014

Details:

The source folder exists on my machine and is accessible
Restarting the Cowork app does not resolve the issue
The issue has persisted since approximately April 16, 2026

It appears the sandbox session eloquent-lucid-cori is stuck in a broken state on the server side and needs to be manually cleaned up.

What Should Happen?

Sandbox should work (again)

Error Messages/Logs

Steps to Reproduce

Working in Cowork, since a day ago it was not able to sandbox anything in cowork.

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

after updating 30 hours ago, so after update it stopped working properly.

Claude Code Version

claude sonnet 4.6

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_