It's next on the list of things to try. I started researching m*** after I made my posting. Looks legit so will give it a try.
Still curious as to what will happen when I try to tie my newly activated installation to my MS account. I already have the HWID for my main installation registered. What will MS software do when I try to add the same PC with an identical HWID? May try a test activation on a spare disk to see what happens.
FYI, I'm dual booting my PC with two Win10 installations on the same PC. My gaming installation is the one that got deactivated by the BIOS update.