[BUG] Desktop app version (from Claude menu > About Claude) • macOS 26.4.1 with M2 Pro • "Cowork shows macOS version requirement not met despite being on 26.4.1"

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?

Desktop app version (from Claude menu > About Claude)
• macOS 26.4.1 with M2 Pro
• "Cowork shows macOS version requirement not met despite being on 26.4.1"
I am on Claude Pro plan

What Should Happen?

Claude CoWork should work

Error Messages/Logs

Cowork requires macOS 14 (Sonoma) or later. Update your operating system to use this feature.

Steps to Reproduce

Load Claude desktop on Mac with macOS 26.4.1 with M2 Pro

Claude Model

Sonnet (default)

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

Claude 1.1617.0 (8d6345) 2026-04-09T16:10:15.000Z

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

Tried dowloading the latest version of Claude desktop, still didn't work.