PK Finder is a free Windows product key recovery tool. The application may be useful during the reinstallation of "windows", when we realize that we have no idea where to store the product key of your Windows version. So before you start formatting your hard drive, it is worth recovering this information using PK Finder, which will not only display the appropriate string, but will also allow you to save the text file.

You can also use the PK Finder if you have not received a product key after purchasing Windows 10 from the Windows Store. In this case, it can be generated and then used for reinstallation.