[BUG] HRESULT 0x80073CF6" and "process exited with code 1

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?

Issue: Claude Code process crashes with exit code 1 after recent update

Environment:

• OS: Windows 11, Build 10.0.26200.8246
• Claude Desktop / Claude Code version: 2.1.117
• Architecture: x64

Summary:
After a recent update to Claude Desktop, Claude Code sessions crash with the error "Claude Code process exited with code 1." The issue started immediately after the update — prior versions worked without any problems.

What I tried:

1. Fully uninstalled the app (including AppX packages and local AppData folders)
2. Restarted the system
3. Reinstalled the latest version from claude.ai/download

Installation error during reinstall:
During reinstallation, the installer failed with:
Installation failed: AddPackage failed: AddPackage failed with HRESULT 0x80073CF6

The installer then offered an "install without Cowork" option, which completed successfully. However, the original crash issue ("Claude Code process exited with code 1") still occurs after this clean install.

Reproduction:

• Open Claude Desktop
• Go to the Code tab
• Open any project folder via "Select folder"
• The process crashes with exit code 1 (occurs consistently across multiple projects)

Additional notes:

• My local user data at C:\Users\<user>\.claude\projects\ is intact (40+ project session histories preserved)
• After reinstall, the Projects list in the Code tab appears empty until folders are manually re-selected
• The crash happens regardless of which project I open
• Terminal CLI (claude command) works fine — issue appears specific to the desktop app's Code tab

Log file:
I have the full ClaudeSetup.log from the failed installation attempt (showing the HRESULT 0x80073CF6 error during AddPackage). Happy to share it if needed.

This is blocking my daily workflow across multiple active projects. Any guidance or a fix would be greatly appreciated.

What Should Happen?

Issue: Claude Code process crashes with exit code 1 after recent update

Environment:

• OS: Windows 11, Build 10.0.26200.8246
• Claude Desktop / Claude Code version: 2.1.117
• Architecture: x64

Summary:
After a recent update to Claude Desktop, Claude Code sessions crash with the error "Claude Code process exited with code 1." The issue started immediately after the update — prior versions worked without any problems.

What I tried:

1. Fully uninstalled the app (including AppX packages and local AppData folders)
2. Restarted the system
3. Reinstalled the latest version from claude.ai/download

Installation error during reinstall:
During reinstallation, the installer failed with:
Installation failed: AddPackage failed: AddPackage failed with HRESULT 0x80073CF6

The installer then offered an "install without Cowork" option, which completed successfully. However, the original crash issue ("Claude Code process exited with code 1") still occurs after this clean install.

Reproduction:

• Open Claude Desktop
• Go to the Code tab
• Open any project folder via "Select folder"
• The process crashes with exit code 1 (occurs consistently across multiple projects)

Additional notes:

• My local user data at C:\Users\<user>\.claude\projects\ is intact (40+ project session histories preserved)
• After reinstall, the Projects list in the Code tab appears empty until folders are manually re-selected
• The crash happens regardless of which project I open
• Terminal CLI (claude command) works fine — issue appears specific to the desktop app's Code tab

Log file:
I have the full ClaudeSetup.log from the failed installation attempt (showing the HRESULT 0x80073CF6 error during AddPackage). Happy to share it if needed.

This is blocking my daily workflow across multiple active projects. Any guidance or a fix would be greatly appreciated.

Error Messages/Logs

Steps to Reproduce

Issue: Claude Code process crashes with exit code 1 after recent update

Environment:

• OS: Windows 11, Build 10.0.26200.8246
• Claude Desktop / Claude Code version: 2.1.117
• Architecture: x64

Summary:
After a recent update to Claude Desktop, Claude Code sessions crash with the error "Claude Code process exited with code 1." The issue started immediately after the update — prior versions worked without any problems.

What I tried:

1. Fully uninstalled the app (including AppX packages and local AppData folders)
2. Restarted the system
3. Reinstalled the latest version from claude.ai/download

Installation error during reinstall:
During reinstallation, the installer failed with:
Installation failed: AddPackage failed: AddPackage failed with HRESULT 0x80073CF6

The installer then offered an "install without Cowork" option, which completed successfully. However, the original crash issue ("Claude Code process exited with code 1") still occurs after this clean install.

Reproduction:

• Open Claude Desktop
• Go to the Code tab
• Open any project folder via "Select folder"
• The process crashes with exit code 1 (occurs consistently across multiple projects)

Additional notes:

• My local user data at C:\Users\<user>\.claude\projects\ is intact (40+ project session histories preserved)
• After reinstall, the Projects list in the Code tab appears empty until folders are manually re-selected
• The crash happens regardless of which project I open
• Terminal CLI (claude command) works fine — issue appears specific to the desktop app's Code tab

Log file:
I have the full ClaudeSetup.log from the failed installation attempt (showing the HRESULT 0x80073CF6 error during AddPackage). Happy to share it if needed.

This is blocking my daily workflow across multiple active projects. Any guidance or a fix would be greatly appreciated.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Claude Code 2.1.117

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

_No response_