Use this command to perform a Workstation Lock procedure. This feature is avalible on advanced Windows versions. Older Windows will use a special Shutdown Manager and Tools Lock feature, you'll need to enter the Unlock password specified at Options and Preferences.
If you want to lock your computer using Shutdown Manager and Tools special feature (instead of Workstation Lock on advanced Windows systems), right-click Shutdown Manager and Tools icon on System Tray, hold SHIFT key on your keyboard and select Lock Computer option.
Default password to unlock computer (when using Shutdown Manager and Tools own feature) is: 1234567890