If the software is still installed on your computer, these utilities can extract the key from your system registry:
: Widely considered a top choice, it generates a comprehensive HTML report of your hardware and software licenses, including keys for Windows, Office, and many other applications. Product Key Recovery Tool Free Download
: A lightweight, portable tool that instantly displays the Product ID and CD Key for Windows, MS Office, and SQL Server. It requires no installation—just run the executable. If the software is still installed on your
