Mcafee Internet Securit\y is active in my system (Windows 10). Security Center reports that antivirus protection (McAfee and Windows Defenser) and firewalls (McAfee and Windows Firewall) do not work.
There are many alerts.
Especially after updating virus definitions.
McAfee has status "protection is active"..
mvt does not help.
Have you tried uninstalling and reinstalling as per
This assumes you used a new MVT as Peter asked. If not uninstall MVT and re-download and run it before uninstalling the program suite.