Periodically, McAfee antivirus software will alert you when certain actions happen on your computer. You can be alerted when a new virus is detected, when an automatic scan has been completed and when updates have been installed. If you would rather let McAfee operate truly "in the background" on your computer, with little to no involvement on the part of the user, you can disable these alerts through the McAfee Security Center.
Open McAfee Security Center by double-clicking its system tray icon.
Click the "Advanced" button next to "Alerts."
Remove the checks next to all the alerts you no longer wish to see in the box on screen.