[BUG] HRESULT 0x80073CFF fix: install Git for Windows instead of PowerShell 7

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 Desktop installer fails with HRESULT 0x80073CFF on Windows.
PowerShell 7 (also MSIX) fails with "Es wurden keine anwendbaren App-Lizenzen gefunden".

What Should Happen?

Workaround that worked: Install Git for Windows via winget install Git.Git
After that, running "claude" in the old Windows PowerShell works successfully.

Suggested fix: The installer or documentation should mention Git for Windows as a fallback when MSIX installation fails.

Error Messages/Logs

Steps to Reproduce

1. Download Claude Desktop installer from claude.ai/download (Windows x64)
2. Run installer as Administrator
3. Installation fails with: "AddPackage failed with HRESULT 0x80073CFF"
4. Tried PowerShell 7 as alternative (winget install Microsoft.PowerShell)
5. PowerShell 7 also fails with MSIX error: "Es wurden keine anwendbaren App-Lizenzen gefunden"

Workaround that fixed it:

1. Install Git for Windows: winget install Git.Git
2. Install Claude Code via npm: npm install -g @anthropic-ai/claude-code
3. Run "claude" in Windows PowerShell (old) → works successfully

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Claude Code v2.1.165

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_