I have a very ancient Asus tablet running Windows. Recently I began using it again. During updates (Windows, Fences, Start 10), Fences was broken. It keeps asking me to update, which downloads, but doesn't install. So, I downloaded manually and installed the update. It also keeps asking me to enable, but won't let me enter the product key. In fact, at the point where I'm supposed to enter the key, it becomes "stuck" with nothing working and I have to use Task Manager to kill the app. Any suggestions?