Windows Sandbox is a feature introduced with Windows 10, available exclusively on Pro editions or higher. It functions as a lightweight virtual machine that runs a fresh copy of the current Windows version without personal data or applications. Users can launch it without extensive setup, and it starts with a clean slate each time, ensuring no changes persist after a session. This isolation helps protect the main operating system from potential threats when testing new software. Windows Sandbox shares similarities with Hyper-V but cannot be enabled on the Home edition of Windows. Upgrading from Home to Pro costs approximately 0. It is considered a significant enhancement for users of Windows 11 Pro.