Windows Product Key Viewer is a free utility that will display the installed Windows Product Key (cd key) and other important Windows system information. You can save this information to a text file, copy the key code or print the Windows information for later use. Including the product key the program displays the full Windows version (and service packs), product id, installation date and time, registered user and organization and the Windows uptime.

Windows Product Key Viewer is great if you ever need to find out your Windows product (CD) key. Windows does not provide a way to view the installed product key. If you have lost your key or the registration card that it is printed on, you are out of luck. Re-installing Windows requires you to have the original product key. Fortunately there is Windows Product Key Viewer.