I had the same problem, but different software. My laptop was a 7, upgraded to 8, then 8.1, then 8.2, then the biggy to 10. All my legacy software worked with each update.
I treated myself to a new laptop this year - latest Windows 10. Most of my legacy software won't work without going through a "Compatibility Settings Check", every time I use it. I think that somewhere in your settings (looks like a cog wheel) there is a way of telling it to run in compatibility mode.
If that doesn't work - the latest Family Tree Maker works excellently with Windows 10. Christmas is coming - ask for donations.
Regards
Chas