Product Identification (PID) Locator - Windows

Desktop Operating Systems

1. Click Start and then click Control Panel.
2. In the Category View, click  System and Maintenance, and then click System. In the Classic View, double-click System.
3. Under the Windows Activation section of the page, the Product ID (PID) is a 20 digit number next  to Product ID.

1. Click Start, and then click Control Panel.
2. In the Category View, click Performance and Maintenance, and then click System. In the Classic View, double-click System.
3. On the General tab, the Product ID (PID) is under Registered to.

Add-On Programs

1. Start Windows Live OneCare
2. On the menu window, click Help, and then click About Windows Live OneCare.
3. The Product ID (PID) is displayed at the bottom of this window.