There are several questions and answers on this site about how to prevent Windows 8 from restarting automatically with Windows Updates. I don't think I need to explain that we have more important things to do than capitulate to demands to restart.
Unfortunately, Windows 8.1 appears to have been reprogrammed so that none of the previously discussed methods of preventing Windows from restarting work anymore.
In the meantime, there must be a new way to prevent Windows 8.1 from restarting.
I previously followed these steps here: http://wind8apps.com/prevent-windows-8-reboot/, but it rebooted anyways.
I have not had this problem since before the Windows 8.1 upgrade, so it seems logical that Windows 8.1 automatically restarts in spite of what I did. Why then, is Windows 8.1 still forcing my computer to reboot? I think there must be something else I must do to stop it.