VS Code extension commands not working - "command not found" errors

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:
After installing Claude Code CLI and VS Code extension, all extension commands fail with "command not found" errors.

Environment:

• OS: Windows
• VS Code: 1.109.5
• Claude Code CLI: 2.1.55
• Extension: anthropic.claude-code v2.1.55

Error messages:

• command 'claude-vscode.editor.openLast' not found
• command 'claude-vscode.terminal.open' not found
• command 'claude-vscode.editor.open' not found

What works:

• Running claude directly in terminal works fine

What I tried:

• Reinstalled Node.js
• Reinstalled Claude CLI
• Reinstalled VS Code extension
• Cleared extension cache
• Added code command to PATH
• Ran claude upgrade

None of these fixed the extension button issue.

What Should Happen?

Description:
After installing Claude Code CLI and VS Code extension, all extension commands fail with "command not found" errors.

Environment:

• OS: Windows
• VS Code: 1.109.5
• Claude Code CLI: 2.1.55
• Extension: anthropic.claude-code v2.1.55

Error messages:

• command 'claude-vscode.editor.openLast' not found
• command 'claude-vscode.terminal.open' not found
• command 'claude-vscode.editor.open' not found

What works:

• Running claude directly in terminal works fine

What I tried:

• Reinstalled Node.js
• Reinstalled Claude CLI
• Reinstalled VS Code extension
• Cleared extension cache
• Added code command to PATH
• Ran claude upgrade

None of these fixed the extension button issue.

Error Messages/Logs

Steps to Reproduce

Description:
After installing Claude Code CLI and VS Code extension, all extension commands fail with "command not found" errors.

Environment:

• OS: Windows
• VS Code: 1.109.5
• Claude Code CLI: 2.1.55
• Extension: anthropic.claude-code v2.1.55

Error messages:

• command 'claude-vscode.editor.openLast' not found
• command 'claude-vscode.terminal.open' not found
• command 'claude-vscode.editor.open' not found

What works:

• Running claude directly in terminal works fine

What I tried:

• Reinstalled Node.js
• Reinstalled Claude CLI
• Reinstalled VS Code extension
• Cleared extension cache
• Added code command to PATH
• Ran claude upgrade

None of these fixed the extension button issue.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

2.1.55

Platform

Other

Operating System

Windows

Terminal/Shell

Windows Terminal

Additional Information

<img width="565" height="109" alt="Image" src="https://github.com/user-attachments/assets/ee373244-53d3-435b-8167-6a71206998ed" />