[BUG] Claude Dispatch permanently showing "desktop appears offline" for multiple weeks

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?

Bug Description
Claude Dispatch has been showing "This desktop appears offline" for approximately 2+ weeks across all devices (web, mobile), despite Claude Desktop running normally on both Mac devices. The issue persists after multiple troubleshooting attempts including complete reinstalls and re-logins on all devices.
Environment

OS: macOS (Apple Silicon - M1 Mac Mini and MacBook Pro)
Claude Desktop version: Latest (reinstalled multiple times)
Plan: [Pro/Max - specify which one you have]
Affected devices: Mac Mini M1, MacBook Pro, iPhone/Android mobile app, claude.ai web
Duration: ~2-3 weeks persistent

Steps to Reproduce

Open Claude Desktop on either Mac device
Navigate to Cowork → Dispatch
Send any message from desktop, mobile, or web interface
Observe "This desktop appears offline" message across all interfaces
Verify Claude Desktop is running, computer is awake, and all processes active

Expected Behavior

Dispatch should recognize active desktop and process tasks
Messages should sync between mobile and desktop interfaces
Desktop should show as "online" when Claude Desktop app is running

Actual Behavior

Persistent "This desktop appears offline" message for 2+ weeks
No response to Dispatch messages from any interface
Issue survives complete app reinstalls and account re-logins
Regular Cowork tasks may still function (if applicable)

Troubleshooting Attempted

✅ Logged out and back in on all devices multiple times
✅ Complete uninstall/reinstall of Claude Desktop on both Mac devices
✅ Complete uninstall/reinstall of mobile app
✅ Verified computer wake settings and Claude Desktop running
✅ Tried toggling Dispatch off/on in settings with app refresh (Cmd+R)
✅ Attempted using only one Mac device (fully quit on the other)
✅ Verified latest app versions on all devices

Additional Context

Previously had working Dispatch functionality before this issue began
Use case involves construction business workflows with multiple Mac devices
This appears to match the server-side session relay issues described in #45937 and #45962
No local troubleshooting resolves the issue, suggesting stuck server-side state

Impact

Complete loss of Dispatch functionality for business workflows
Unable to hand off tasks between mobile and desktop interfaces
Affecting daily construction project management and invoicing workflows

Related Issues

Similar to #45937 (Dispatch main conversation permanently offline)
Similar to #45962 (Dispatch shows "desktop appears offline" on macOS)
Appears to be the same class of server-side relay issue described in those threads

What Should Happen?

Expected Behavior

Dispatch should recognize active desktop and process tasks
Messages should sync between mobile and desktop interfaces
Desktop should show as "online" when Claude Desktop app is running

Error Messages/Logs

Desktop appears offline.
Will run when it reconnects.

Steps to Reproduce

Steps to Reproduce

Open Claude Desktop on either Mac device
Navigate to Cowork → Dispatch
Send any message from desktop, mobile, or web interface
Observe "This desktop appears offline" message across all interfaces
Verify Claude Desktop is running, computer is awake, and all processes active

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

2.0.29

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_