[BUG] # Claude Code Desktop App: Windows Drive Not Mounted in Container

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?

Claude Code Desktop App: Windows Drive Not Mounted in Container

Environment

• OS: Windows 10 (Build 10.0.26200)
• Claude Code Version: 2.19675.1
• Install Type: MSIX (current-user)
• Container OS: Linux (kernel 6.18.44-fc-v77)

Problem

Claude Code runs in a containerized Linux environment with no mount for the host Windows file system. The user cannot access C:\code or any local Windows directories from within the IDE.

Expected

Windows C: drive (or at minimum, user's project directories) should be accessible within the Claude Code container, similar to how WSL2 mounts Windows drives at /mnt/c/.

Actual

• All file I/O is confined to /home/user/Corinne within the container
• No /mnt/c/ mount exists
• No Windows drive accessible from any session (desktop or web version)

Reproduction

1. Install Claude Code on Windows (MSIX)
2. Launch the app
3. Attempt to access local Windows files (e.g., C:\code)
4. Files are not accessible; no error, just no results

Impact

Blocker - Application is unusable for local development. User has active annual subscription but cannot develop against local files.

Investigation Notes

• Issue persists across:
• Desktop app restart
• Full system reboot
• Clean uninstall + reinstall (including cleanup of AppData\Local\Packages\Claude_*)
• Original MSIX installation failed with HRESULT 0x80073CF6, retry succeeded but mounting never worked
• Web version (claude.ai/code) also shows "Can't reach your computer"

Request

Fix containerized environment to mount Windows file system, or provide configuration to enable local drive access.

What Should Happen?

Expected

Windows C: drive (or at minimum, user's project directories) should be accessible within the Claude Code container, similar to how WSL2 mounts Windows drives at /mnt/c/.

Error Messages/Logs

## Error Codes & Messages
- **MSIX Installation**: `HRESULT 0x80073CF6` (AddPackage failed)
- **GitHub Triage Bot**: Action timeout after 5m 11s
- **Web App**: "Can't reach your computer"

## Log Locations (Windows)
Claude Code logs are typically at:
- `%APPDATA%\Anthropic\Claude\logs`
- Event Viewer → Windows Logs → Application (filter for Claude)

## Next Steps for Anthropic
1. Check containerization config for volume mount setup
2. Verify MSIX package includes drive-mounting capability
3. Review triage bot timeout (may be unrelated infrastructure issue)

Steps to Reproduce

Steps to Reproduce

1. Clean Install

• Uninstall Claude Code completely from Windows
• Delete C:\Users\[username]\AppData\Local\Packages\Claude_*
• Delete C:\Users\[username]\AppData\Local\anthropicclaude\
• Restart Windows

1. Reinstall

• Download latest Claude Code installer
• Install as current user (MSIX package)
• Wait for installation to complete

1. Launch & Test

• Open Claude Code
• Open terminal/file explorer in the IDE
• Try to navigate to C:\code or any local Windows directory
• Attempt ls C:\ or file operations in bash

1. Verify Failure

• Confirm files are not accessible
• Check current working directory: shows /home/user/Corinne (Linux container path)
• Run ls /mnt/c/ — returns "No such file or directory"

Expected Result

User can access and edit files in C:\code and other Windows directories through Claude Code IDE.

Actual Result

• All file access limited to /home/user/Corinne
• No Windows drive mounted in container
• Cannot create, edit, or access local Windows files

Claude Model

Not sure / Multiple models

Is this a regression?

Yes, this worked in a previous version

Last Working Version

Not sure but it was working in the latest version. I don't know if it's related, but it happened around the time that I opened my project in Chrome to continue working there so I could use some of the $100 credit I got for online use.

Claude Code Version

Configured for: Claude Opus 5.5 Actually running: Claude Haiku 4.5 (claude-haiku-4-5-20251001) You're set up on Opus but the runtime fell back to Haiku - probably due to quota/availability. The session ID is session_01KoXyWVXtVhoMCYuNvQ9bhV if you need it for anything.

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

Other

Additional Information

Timeline

• Issue first noticed after attempting to use claude.ai/code (web version)
• Web version also unable to access local files ("Can't reach your computer")
• Desktop MSIX version: 2.19675.1
• No recent manual updates recalled, but automatic updates may have occurred

According to Claude -"The drive mounting issue is almost certainly an MSIX/containerization problem on the desktop app."

BTW - not using a terminal to code, using the Claude desktop app.