Find your lost key for any properly installed Microsoft product with the help of this free tool.
Have you misplaced the product key for your Windows or Office installation? Well, with ProduKey from NirSoft, tracking down and keeping track of lost Product Key is a snap. Just run the program and it will instantly delve into the registry on your system and come up with the product keys for each of the supported Microsoft applications that you have installed. (ProduKey can identify product keys from various versions of Windows, Microsoft Office, Windows, SQL Server, and Exchange Server.) Once ProduKey finds the product keys, it allows you to save them so that you can find them whenever you need to reinstall that software.
To begin with, keep in mind that there are two versions of this program: one for 32-bit and one for 64-bit operating systems. Both versions are available on the product download page. This free program is small and doesn't require installation. The site lists that system requirements as Windows 2000 thru Windows 7, but it ran fine in Windows 8. The program does sport a remote connection feature, but I was unable to get that to work in Windows 8.When you run ProduKey on a system, the program immediately gathers and displays the Product ID and CD Key codes for all the supported Microsoft products that you have installed, as shown in Figure A. In addition to the key codes, you'll see that ProduKey will display additional information, such as the installation folder and information about any installed service packs.