[BUG] Windows 11: Write tool and Bash tool cannot write files visible to the real file system

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?

Environment:

• OS: Windows 11 Enterprise 10.0.26200
• Claude Code: standalone CLI window (not VS Code terminal, not JetBrains)
• Shell: bash (Git Bash / POSIX sh)

Steps to reproduce:

1. Run Claude Code in a standalone CLI window on Windows 11
2. Use the Write tool to create a file at D:\folder\test.txt
3. Use Bash tool: echo "test" > "D:\folder\test.txt"
4. Also tried ! echo "test" > "D:\folder\test.txt" prefix in prompt

What Should Happen?

Expected behavior:
The file should appear in D:\folder in Windows File Explorer.

Error Messages/Logs

Actual behavior:
  - Write tool reports success but the file is not visible in File Explorer
  - Bash tool commands also cannot create files visible in the real file system
  - Files only exist inside the sandbox environment, completely isolated from the real Windows file system
  - The ! prefix for direct shell execution also doesn't work in this environment

Steps to Reproduce

Impact:
Claude Code is effectively unusable for any file operations on this Windows setup. Cannot create, edit, or modify any
files in the user's actual working directory.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.195

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_