Had the same problem.
Software Firewall was preventing it reaching its activation server. I use Norton so I right clicked on the Norton Icon bottom right of window 10 screen and selected "disable smart firewall" for 15 minutes to complete the activation. It got to the activation server ... I put in my License Code (new this year) and then it spun again for about 3 minutes before I got an all set Icon. So bottom line temporarily disable your firewall so the software can go outbound to reach the license server. Then you can re-enable it.
