As far as we know, Cox Security Suite Plus Powered by McAfee is compatible with Windows 10. We're double-checking with our McAfee partners and will let you know what we find out. Are Windows 10 and Cox Security Suite causing problems on your PC?
I would suggest getting a better Antivirus program. The only reason Mcafee is still afloat is because they sell their software cheap to PC manufacturers and ISPs. Usually anything you get for free will be junk IMO. Its like the prize at the bottom of the cereal box.