I am a Lifelock select customer with coverage for 5 computers, and I have at least one already-installed machine that will need an upgrade from Windows 10 home to Windows 10 Pro. I would like to know whether my machine and my license will still be recognized by Norton after I do the upgrade. Are there any particular steps I should take to make sure that I don't needlessly use up one of my installs?
As long as you are installing on the same physical computer there will not be an extra activation used. Even dual booting with different OS versions on the same computer will only use one activation.