WorkStation Lock Pro - Version 4.0 WorkStation Lock Pro provides a simple, effective, multi-user approach to password protect your Windows NT/2000/XP Pro system quickly from the system tray, a desktop shortcut or after a period of inactivity without involving a screen saver. It provides a variety of features that make it more flexible than the native Windows locking mechanism. WorkStation Lock Pro uses Windows user authentication, so all of the password management is handled by Windows using your existing procedures.