[BUG] Cowork Windows: GitHub connector shows "Connected" but exposes no tools to Claude

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?

Description

Same issue as reported in #23775 and #52549 (both now locked). Reporting here to confirm the bug is still present.

The GitHub connector in Cowork shows green "Connected" status after OAuth authorization, but Claude has zero GitHub tools available in conversations. search_mcp_registry with keywords ["github"] returns empty results.

Steps to reproduce

1. Open Claude Cowork on Windows
2. Go to Connectors and connect the GitHub connector
3. OAuth flow completes, connector shows "Connected"
4. Start a new conversation and ask Claude to use GitHub tools
5. Claude reports it has no GitHub tools available

Expected behavior

GitHub connector should expose tools (list repos, read issues/PRs, etc.) after successful connection.

Actual behavior

Connector shows "Connected" but no GitHub tools are registered in Claude's tool list.

Environment

• Claude Desktop (Cowork mode)
• Windows
• May 2026

Related issues

• #23775 (locked)
• #52549 (locked)

What Should Happen?

After connecting the GitHub connector, Claude should have access to GitHub tools (list repos, read issues, view PRs, etc.) in Cowork conversations — the same way other connectors like Gmail expose their tools after connection.

Error Messages/Logs

Steps to Reproduce

1. Open Claude Cowork on Windows
2. Go to Connectors settings
3. Connect the GitHub connector — OAuth flow completes, connector shows green "Connected"
4. Start a new conversation
5. Ask Claude to use GitHub tools (e.g. "list my repos")
6. Claude reports it has no GitHub tools available

Claude Model

None

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

Claude Desktop (Cowork) - Windows, May 2026

Platform

Other

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

_No response_