[BUG] Windows: File and command tools fail due to incorrect bash.exe path

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?

Description:

On Windows with Git for Windows installed, all file modification and command execution tools (Read, Write, Edit, Bash) fail with the following error:

Command failed: cygpath -u 'C:\Users\jsparrow\AppData\Local\Temp'
Skipping command-line '"C:\Users\jsparrow\AppData\Local\Programs\Git\bin\..\usr\bin\bash.exe"'
('C:\Users\jsparrow\AppData\Local\Programs\Git\bin\..\usr\bin\bash.exe' not found)
Need a valid command-line; Edit the string resources accordingly
Root Cause:

Claude Code is looking for bash.exe at:

C:\Users\jsparrow\AppData\Local\Programs\Git\usr\bin\bash.exe (doesn't exist)
But it's actually installed at:

C:\Users\jsparrow\AppData\Local\Programs\Git\bin\bash.exe
Impact:

✅ Glob tool: Works
✅ Grep tool: Works
❌ Read tool: Fails
❌ Write tool: Fails
❌ Edit tool: Fails
❌ Bash tool: Fails
This makes Claude Code nearly unusable for file operations and command execution on Windows.

Environment:

OS: Windows
Git installation: Git for Windows at C:\Users\jsparrow\AppData\Local\Programs\Git
Claude Code running in VSCode extension

What Should Happen?

Expected Behavior:

Claude Code should correctly locate bash.exe from the Git for Windows installation.

Error Messages/Logs

Steps to Reproduce

Install Claude.
Try to use it.

Claude Model

Not sure / Multiple models

Is this a regression?

I don't know

Last Working Version

_No response_

Claude Code Version

2.1.30 (Claude Code)

Platform

Anthropic API

Operating System

Windows

Terminal/Shell

VS Code integrated terminal

Additional Information

_No response_