Cowork Windows: Triple-parallel VM startup race condition causes “VM is already running” failure loop
증상
- I have searched existing issues and this hasn’t been reported yet
원인
Race condition or deadlock from multiple concurrent operations targeting the same shared resource without proper locking.
해결법
Force-stopping the stale VM before launching Claude Desktop reduces (but doesn’t eliminate) the issue: powershellGet-Process claude -ErrorAction SilentlyContinue | Stop-Process -Force Stop-VM “cowork-vm” -Force -ErrorAction SilentlyContinue Start-Sleep 3 Suggested Fix
Add a mutex/lock around VM startup to prevent parallel attempts Check for and clean up stale VMs before attempting boot Don’t auto-reinstall when the error is “VM is already running” — that means a previous attempt succeeded Fix the 30-second shutdown timeout so VMs are properly stopped on app quit
예상 토큰 절약
이 에러로 삽질 시: 약 5,000~15,000 토큰 소비 이 해결법 참조 시: 약 500 토큰
출처
https://github.com/anthropics/claude-code/issues/32936
Source: https://github.com/anthropics/claude-code/issues/32936
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