[BUG] Cowork crashes with "Claude Code process exited with code 1" on macOS Tahoe 26.3

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?

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report
• [x] I am using the latest version of Claude Desktop

What's Wrong?

Cowork crashes with "Claude Code process exited with code 1" on every prompt submission. Chat mode works fine. Only Cowork is affected.

Environment

• macOS Tahoe 26.3
• Claude Desktop (latest version)
• Hardware: MacBook Air

Steps to Reproduce

1. Open Claude Desktop
2. Navigate to Cowork
3. Type any prompt and submit
4. Error appears: "Claude Code process exited with code 1"

Expected Behavior
Cowork should respond to the prompt normally.

Actual Behavior
Process crashes immediately with exit code 1. No response is returned.

Troubleshooting Already Attempted

• Verified Claude is listed and enabled under System Settings → Privacy & Security → Screen & System Audio Recording
• Ran tccutil reset All com.anthropic.claudefordesktop — returned success, re-granted permission, issue persists
• Confirmed Claude Desktop is on the latest version

Additional Context
This appears related to issues #33424 and #36419 (macOS Tahoe + Cowork crashes). Chat mode is fully functional — only Cowork is broken.

What Should Happen?

Expected Behavior
Cowork should respond to the prompt normally.

Error Messages/Logs

Claude Code process exited with code 1

Steps to Reproduce

Open Claude - open co-work. Type in anything. Error.

Claude Model

Opus

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

Claude 1.3036.0 (cf521c) 2026-04-16T16:17:33.000Z

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_