[BUG] Cowork browser automation tools stopped working

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?

Cowork browser automation tools stopped working after updating to version 1.3036.0.0. Claude in Chrome tools (navigate, read_page, click, form_input) no longer work during Cowork sessions. Tasks that were working before the update now fail mid-execution with "Claude Code process exited with code 1".

What Should Happen?

Cowork should complete browser automation tasks using Claude in Chrome tools as it did before the update.

Error Messages/Logs

Claude Code process exited with code 1

Steps to Reproduce

1. Open Claude Desktop on Windows 11 Home
2. Open Cowork tab
3. Give any task that requires browser automation (e.g. navigate to a URL and interact with a web app)
4. Claude starts the task but fails mid-execution with "Claude Code process exited with code 1"
5. Clicking "Intentar nuevamente" or starting a new chat produces the same error

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

Unknown - broke after auto-update to 1.3036.0.0

Claude Code Version

Claude Desktop 1.3036.0.0 (not Claude Code CLI)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

OS: Windows 11 Home Single Language
Claude Desktop version: 1.3036.0.0 (auto-updated today)
Browser automation tasks were working correctly before this update.
Claude in Chrome extension is installed and connected.
Related to my previous bug report about Cowork startup on Windows Home.