If you have moved the Windows.old folder to a different location, ShowKeyPlus will not automatically recover the product key from Windows.old folder. In addition to that, if the Windows.old folder is located in the root of the drive where the currently running Windows is installed, and it will automatically retrieve the product key from the Windows.old folder and display it as Original key. Step 3: Once the application is launched, it will display your current product key, installed version, and edition of Windows. Click Yes button if you see the User Account Control box. Step 2: Extract ShowKeyPlus.zip file to get ShowKeyPlus executable. It’s a portable utility designed to help you recover Windows product key and, more importantly, is free software. Step 1: Visit this page of GitHub and download the latest version of ShowKeyPlus software. If you have the image backup of a version of Windows, mount or extract the image file contents to a folder and then follow the given below instructions. Note: In addition to Windows.old folder, you can also use this method to retrieve the product key from any kind of backup that you previously created, either using the native image backup tool or third-party software on your internal drive or external drive.