[BUG] Cowork VM 2.1.121 ships Linux ELF ARM64 binary on macOS Apple Silicon - VM cannot start

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?

Platform: macOS Apple Silicon (arm64)
Claude desktop version: [check Claude menu → About]
VM SDK version: 2.1.121
BuildID: 6efe4e93908606db428dd3cbdc8adf1ae5978587

file output: ELF 64-bit LSB executable, ARM aarch64 (Linux binary)
Expected: Mach-O 64-bit executable arm64

All Cowork scheduled tasks fail. VM cannot start.
Persists after full rm -rf of claude-code-vm directory and relaunch.

What Should Happen?

Platform: macOS Apple Silicon (arm64)
Claude desktop version: [check Claude menu → About]
VM SDK version: 2.1.121
BuildID: 6efe4e93908606db428dd3cbdc8adf1ae5978587

file output: ELF 64-bit LSB executable, ARM aarch64 (Linux binary)
Expected: Mach-O 64-bit executable arm64

All Cowork scheduled tasks fail. VM cannot start.
Persists after full rm -rf of claude-code-vm directory and relaunch.

Error Messages/Logs

RPC error: failed to mount /mnt/.virtiofs-root/shared/Users/sliu/Documents/Claude/Scheduled/optic-prod-daily-health as .scheduled/optic-prod-daily-health: source path does not exist and could not be created: /mnt/.virtiofs-root/shared/Users/sliu/Documents/Claude/Scheduled/optic-prod-daily-health: mkdir /mnt/.virtiofs-root/shared/Users/sliu/Documents: file exists

Steps to Reproduce

Scheduled tasks not running, and returned the above error

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Claude 1.5354.0 (9a9e3d) 2026-04-29T01:14:34.000Z

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_