For example, you must never update your Windows 7 or else it will ask you to re-enter activation keys and for all the updates, these keys won't work properly. Nevertheless, we are going to share some other ways to activate Windows 7 as well, so you can implement any method that works with you.īefore, we proceed you must acknowledge that using these keys comes with certain limitations. Basically, these serial keys are good enough to activate your Windows 7 Ultimate computer, however, we must give you a fair warning that not all of the product keys would work perfectly. In this article, we will be sharing as much Windows 7 ultimate product key as we can.