Step 1 - Malicious infiltration Assume, McAfee doesn’t protect your computer against viruses. It is possible that the computer could get affected. When the computer is affected by viruses, a few of the malicious viruses might deactivate the current firewall and antivirus program. This, in turn, leads to loss of personal information. In this scenario, turn on the McAfee firewall and perform a full system scan immediately. So, you can protect the computer from viruses as well as from data theft.
Step 2 - Multiple antivirus programs You cannot run more than one antivirus program at a time on a computer. It is obvious that one of the firewall or antivirus software gets disabled if you run multiple antivirus programs. This might be one of the reasons behind the automatic deactivation of McAfee on your computer. You are strongly recommended to deactivate or uninstall the other third-party antivirus program. Now, the McAfee firewall will be able to protect the computer without any interruptions.