[BUG]

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 clicking the accessibility permissions button in Cowork's Dispatch feature on Windows, the app tries to open the URL x-apple.systempreferences, which is a macOS-only protocol for opening System Preferences. Windows does not recognize this protocol, so it shows a dialog saying "Your PC doesn't have an app that can open this link" and redirects to the Microsoft Store, which shows a blank/not-found page. This makes it impossible to grant accessibility permissions for Dispatch on Windows.

What Should Happen?

What should happen:
On Windows, clicking the accessibility permissions button should either open the relevant Windows Settings page (e.g. Settings → Privacy & Security → Accessibility), or show clear manual instructions for granting the permission. The x-apple.systempreferences protocol should only be used on macOS.

Error Messages/Logs

Steps to Reproduce

Steps to reproduce:

Install Claude Desktop on Windows from claude.ai/download (MSIX version)
Open Claude Desktop and navigate to the Cowork tab
Start a new Dispatch session
When prompted to grant accessibility permissions, click the button to open settings
Observe the dialog: "Get an app to open this 'x-apple.systempreferences' link — Your PC doesn't have an app that can open this link. Try looking for a compatible app in the Microsoft Store."
Clicking "Browse Microsoft Store" opens the Store to a blank/not-found page

Claude Model

None

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

Not applicable — using Claude Desktop app

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

<img width="751" height="332" alt="Image" src="https://github.com/user-attachments/assets/3f07ad17-fe80-4435-9d59-000246397f9b" />