# Windows Setup [Back to Day 0](README.md) --- **Node.js** - Go to [nodejs.org](https://nodejs.org) - Click the **"Download Node.js (LTS)"** button — this downloads the `.msi` installer - Run the `.msi` file and click **Next** through the wizard - Accept the defaults, click **Install**, wait for it to finish **Verify Node.js** - Open a **new** terminal (PowerShell or Windows Terminal) and run: ```powershell node --version npm --version ``` **Claude Code** - ```powershell npm install -g @anthropic-ai/claude-code ``` - If you get a permission error, run your terminal as **Administrator** (right-click > Run as administrator) **Verify** - ```powershell claude --version ``` --- Now head back to [README.md](README.md) for authentication setup.