Fast Connect re-install - XFinity

For Fast Connect re-install, XFinity-Comcast internet. I have FC from Comcast working fine on my laptop, but it was uninstalled from my "Desktop", Can I still re-install it to to my Desktop, and have it syncd to my laptop, since Comcast no longer supports whitesky?

I also have Norton and CGPS, installed from Comcast....What is my best solution since I really like Fast Connect.