[BUG]

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?

Title: Cowork tab completely missing from sidebar after April 14 redesign (Windows 11, v1.3109.0.0)

Description:

• OS: Windows 11 Pro x64, Build 25H2
• Claude Desktop: v1.3109.0.0
• Plan: Pro (paid)
• Virtualization: Hyper-V + Virtual Machine Platform enabled

Issue:
After updating to v1.3109.0.0 on April 19, 2026, the Cowork tab is completely absent from the sidebar. Other tabs appear (Code, Design, Chat) but Cowork does not.

Sidebar shows: New chat, Search, Customize, Chats, Projects, Artifacts, Code, Design
Missing: Cowork (should appear as main sidebar item per docs)

Steps taken (all unsuccessful):

• Full uninstall + cache deletion + reinstall
• System restart
• CoworkVMService verified running
• Verified Pro plan is active

What Should Happen?

<img width="385" height="552" alt="Image" src="https://github.com/user-attachments/assets/611b913b-d0db-414d-955f-b3ff307dfd88" />

Error Messages/Logs

Steps to Reproduce

Title: Cowork tab completely missing from sidebar after April 14 redesign (Windows 11, v1.3109.0.0)

Description:

• OS: Windows 11 Pro x64, Build 25H2
• Claude Desktop: v1.3109.0.0
• Plan: Pro (paid)
• Virtualization: Hyper-V + Virtual Machine Platform enabled

Issue:
After updating to v1.3109.0.0 on April 19, 2026, the Cowork tab is completely absent from the sidebar. Other tabs appear (Code, Design, Chat) but Cowork does not.

Sidebar shows: New chat, Search, Customize, Chats, Projects, Artifacts, Code, Design
Missing: Cowork (should appear as main sidebar item per docs)

Steps taken (all unsuccessful):

• Full uninstall + cache deletion + reinstall
• System restart
• CoworkVMService verified running
• Verified Pro plan is active

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Version 1.3109.0 (35cbf6)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_