First of all, I personally suggest that you don't install two or more antivirus software on a computer. As far as these antivirus software are concerned, I personally suggest Kaspersky antivirus. Don't choose other antivirus software. If you want to use a firewall or something, I personally suggest that you choose one from 360 security guards and Tencent computer housekeeper, and you don't have to choose the others. Excessive installation of antivirus software will seriously affect the running speed of the machine.