I just turned that Windows 8.1 PC back on and ran Windows update manually. It did the checking for updates for about 10 minutes then just displayed a "Upgrade to Windows 10" "Start installing the latest version of Windows now". "More info" and "Get started" are the only two options shown in that message box. More info just opens IE to the FAQ page for the free upgrade. The only other option underneath it is "show all updates"? Talk about in your face and making it impossible to actually do anything but upgrade..
If I go to show all updates there are 222 listed as important and 11 optional. Some say they are security updates, and some say update for Windows 8.1. Non of them say they are the one that does the upgrade, and Upgrade to Windows 10 is not in the list? So now what do you do? Thanks Microsoft for really complicating peoples computing experience. It looks like there is no way to run Windows update manually without upgrading to Windows 10?