thank you for posting on Avanquest UK forum webpage.
GSP Who Do You Think You Are? software is designed to work on computer operating systems Windows XP, Windows Me and Windows Vista
Depending on the computer configuration fully updated Windows 10 should be able to run GSP Who Do You Think You Are? in compatibility mode.
Therefore the software will install and function, but this doesn't mean it will perform flawlessly.
On Windows 10 I recommend the latest Family Tree Maker! - http://www.mackiev.com/ftm/
Avanquest Support team