mcafee not installed

The above answer is correct, but frankly I would consider yourself lucky if McAfee isn't installed.  Third-party anti-virus solutions these days are not worth dealing with since they're always some combination of bloated, "noisy" in terms of notifications, expensive, or bothersome in terms of blocking, slowing down, or otherwise interfering with legitimate activity.  One particular problem area is Windows updates, where third-party anti-virus can sometimes render the system unbootable after an update because they hook the OS in ways that aren't supported, so when Microsoft changes something that nobody else should have been touching anyway, things break.  That occasionally happens even in regular monthly updates, but in this era of new major Windows 10 releases arriving every March and September, there's even more risk than there has been before.  And then there have been reports of anti-virus solutions CREATING major security vulnerabilities in systems.  It turns out that when your application inserts itself into everything that's going on in the system, a bug in your code can be exploited in all sorts of ways (like just sending the PC some network traffic since AV solutions often inspect it all) and a successful exploit can grant all sorts of access.

All of that is why these days I just use a combination of Windows Defender and common sense.  I got tired of other solution that kept trying to protect me from things I wanted to do, especially when they tried to charge me for the privilege.

Already checked, nothing there..