For users who have just reinstall programs of Windows computer, reinstall or update operating system, when using the programs, users will be asked to type in the product key. However, after a long time, there are a group of users who cannot call back the Windows product keys they have. Thus, here we collect some useful Windows product key finders to help you out of trouble.

Top 1: PassFab Product Key Recovery

PassFab Product Key Recovery is a professional product key finder, it can help users to find back product key in just one click. To start Windows product key recovery, users should first download this free product key finder program.

Step 1: Install it to your computer and run it, you will see a screen as below:

product key recovery

Step 2: Click on “Get Key”, then the program will start searching the product keys of the programs in your Windows 10/8/7 computer and display them in the list.

get key

Step 3: You then can copy the keys to register the product in your Windows computer.

Top 2: Windows Product Key Finder Pro

Windows Product Key Finder Pro is also a good software utility which allows you to find and recover your CD Product key for Windows or Office programs for the purposes of reinstalling / repairing your Windows or Microsoft Office setup.

windows product key finder pro

This program is in a small size, but its ability is more than we imagine. Only one click to run the program you then will get back your product keys. But, this software don't support to recover files or documents' password.

Top 3: Belarc Advisor

Belarc Advisor can be regarded as the standard of system information software. Do you know it also has the ability to extra product keys? It can display information in your browser windows, and there is no adware/toolbars to worry about.

belarc advisor

Just like Windows Product Key Finder Pro, Belarc Advisor cannot provide as much functions to recover password for files and data, but only product keys. Still, if you are also care for your Windows computer, this software is really worth you to have a try.


That 's all about the best 3 free Windows product key finders, you are welcomed to pick up one of them to have a try. And for users who also have the needs to find back passwords for other things like passwords of Windows 10/8.1/8/7/XP/Vista/Server or files, PassFab Product Key Recovery will never let you down!