[BUG] First-time Dispatch never connects on Windows 11 — messages send but no response renders, mobile "failed to load sessions

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?

On a first-time Dispatch setup, messages sent from the Dispatch thread are delivered but no response ever renders on any client. The desktop sits in a connecting/"trying" state and the Android app intermittently shows "failed to load sessions." This never worked on first use. All settings are correct and the setup matches the documented requirements.

What Should Happen?

Expected: Desktop shows online, message receives a response, sessions load on mobile.

Actual: Message sent, no reply renders anywhere; mobile can't load sessions.

Error Messages/Logs

Steps to Reproduce

Fresh first-time Dispatch setup on Windows 11 desktop app
Settings confirmed: Keep awake ON, Mobile notifications ON, Computer use enabled, Code permissions set to Ask
Send a message ("hello") from the Dispatch thread
Message shows as delivered; no response renders on desktop or mobile
Android app shows "failed to load sessions" on the Dispatch screen

Claude Model

Opus

Is this a regression?

No, this never worked

Last Working Version

_No response_

Claude Code Version

Version 1.15962.1 (1e236d)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

Appears to be the same class of server-side relay issue as #40179 (responses generated but never delivered to clients) and #45937 (Dispatch permanently offline despite working setup). Local troubleshooting has no effect, suggesting a server-side pairing/state reset is needed.