A product key is used to identify the rightful owner of a piece of software. By having the serial number or license number at hand, Microsoft can verify that you actually purchased the program. Although software can be copied, the product key remains unique and can only be used for a single matching version of the software. This holds true for Windows 8 and many other operating systems and software. If you purchase a physical version of your operating system, the license product key is usually located on the back of the box. However, if you lose the product key, finding it may prove a challenge.
When you reinstall your operating system, you will most likely be prompted to enter your product key. Therefore, it is advisable to get it in advance. If you’re unable to find it, fortunately, there are ways to get your Windows 8 product key. You can use additional software or Windows tools.