[BUG] Server busy error - Failed to start Claude workspace / Can't reach the Claude API from Claude's workspace

[gvv1965]

Preflight Checklist

• I have searched existing issues and this hasn't been reported yet
• This is a single bug report (please file separate reports for different bugs)
• I am using the latest version of Claude Code

What's Wrong?

When I access Cowork the app freezes and keeps saying "Server is busy" until it stops with the mesage Unable to connect to API / connection refused

What Should Happen?

Claude Cowork should be working properly

Error Messages/Logs

Steps to Reproduce

1 Launch the Claude app
2 Access Cowork
3) Start a new task
4 Write a prompt

Claude Model

Sonnet (default)

Is this a regression?

Yes, this worked in a previous version

Last Working Version

No response

Claude Code Version

1.1.9669

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

No response

[github-actions]

Found 3 possible duplicate issues:

1. [BUG] Cowork fails with Network status: NOT_CONNECTED even when API reachability: REACHABLE #39142
2. [BUG] Claude Code ECONNREFUSED on one Mac — all standard troubleshooting exhausted #40922
3. Code tab shows Cowork content; Cowork not responding (macOS, v1.1.9493) #40585

This issue will be automatically closed as a duplicate in 3 days.

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🤖 Generated with Claude Code

[github-actions]

This issue has been automatically closed as a duplicate of #39142.

If this is incorrect, please re-open this issue or create a new one.

🤖 Generated with Claude Code

[github-actions]

This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.