What I understood from your post is, you are using McAfee Security Scan plus. McAfee Security Scan Plus is a free scan software you get when you install some software’s like Adobe.
If your McAfee Security Center is active you no need to worry about your computer security. You can better uninstall the McAfee security scan plus and use McAfee Security Center alone to avoid these kind of situations.
If my statement above is wrong, please post the screenshot of the error to get better understanding of the issue
I guess the next time I get that I'll get a screenshot of it. I think you're probably right about it, but not 100% sure. Thanks.