this morning my second computer has the same problem, finally I reinstall in my 2 computers and after update everything seems to be correct.
After unistall and before reinstall I clean the registry entries with cClean.
I hope this helps.
Joseph from Barcelona.
There is a problem with an update that came in recently. Please uninstall via Control Panel, use the MCPR cleanup tool listed under Useful Links at the top of this page (no need of 3rd party cleaners) reboot and reinstall from your online account.
There is an announcement about it at the top here: https://community.mcafee.com/community/home/