[BUG] "Claude Desktop Failed to Launch: We are so sorry, Claude Desktop failed to launch. Please check for updates and try again. If the issue persists, contact support." Tahoe 26.3.1

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?

when downloading .dmg file for mac, above pop up appears every time - have deleted entire library cache, checked for latest version of desktop app, no luck with anything.

What Should Happen?

Claude desktop app opens on mac

Error Messages/Logs

Steps to Reproduce

claude.ai/download
macOS
download to desktop
save
drag to applications
open Claude app
error

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

1.1.6041

Platform

Other

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_