Claude Code tab in Desktop app (Windows) - no response to any messages

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?

The Code tab in the Claude Desktop app sends messages but never receives a response. The message appears in the chat but the response area stays blank indefinitely. This happens with every message, not just specific prompts.

The Chat tab works fine. Only the Code tab is affected.

What Should Happen?

Should run a daily brief sequence. But any message gets no response.

Error Messages/Logs

Repeated errors on every Code session open:

[REACT_QUERY_CLIENT] QueryClient error: Error: Not found

Also seeing CSP errors:
The Content Security Policy directive 'upgrade-insecure-requests' is ignored when delivered in a report-only policy.



From `main.log`:
- MCP tools load (toolCount=12) but local MCP servers show serverCount=0
- Session maps correctly to CLI session
- No crash or explicit error — just silent failure


- Reinstalled the app (fresh download from claude.ai/download) — same issue
- Cleared cache (`Cache`, `Code Cache`, `GPUCache`, `Session Storage` directories) — same issue
- The VS Code extension Claude Code works fine for the same project directory
- The Chat tab and Cowork tab in the same Desktop app work normally

Steps to Reproduce

1. Open Claude Desktop app
2. Click "Code" tab
3. Set project directory
4. Type any message (e.g. "Good morning")
5. Message sends but no response ever appears

Claude Model

Not sure / Multiple models

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

1.1.8359

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Other

Additional Information

_No response_