Claude Desktop - Unknown Error on startup after computer restart (Windows)

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?

Issue: "Couldn't connect to Claude > Unknown Error" appears every time after restarting computer
Product: Claude Desktop app (version 1.11187.4.0)
OS: Windows with WSL enabled
Steps to reproduce:
a. Restart computer
b. Open Claude Desktop
c. Error appears immediately
Already tried:
Clear Cache and Restart
Reset App Data
Running as administrator
Disabled VPN
Implemented PowerShell fix from previous support session
Checked /etc/resolv.conf in WSL

cowork-service.log

main.log

What Should Happen?

Claude desktop should open

Error Messages/Logs

Steps to Reproduce

a. Restart computer
b. Open Claude Desktop
c. Error appears immediately

Claude Model

Opus

Is this a regression?

Yes, this worked in a previous version

Last Working Version

version 1.11187.4.0

Claude Code Version

version 1.11187.4.0

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

PowerShell

Additional Information

_No response_