It seems that your software has somehow become corrupt. I would suggest a complete Uninstall/Reinstall of your McAfee Product. However to make certain there is not any Malware present on your system, please run the following program ( Malwarebytes (Free) Select any possible detections to remove and restart.
You can obtain this and other Superb Applications from here > Anti-Spyware/Malware & Hijacker Tools . Then follow these Guidelines/Instructions How To Uninstall/Reinstall McAfee Consumer Products EXCEPT Anti-Theft
Also please make sure you have no other Security software installed, which could cause conflicts with each other.
Using 2 Anti-Virus applications at once can/and will create havoc on one's system.
If you are still experiencing problems, you can contact Technical Support 24/7 at no cost. Via Online Chat/Phone being by far the quickest. https://service.mcafee.com/webcenter/portal/cp/home/contact