McAfee security software provides comprehensive protection for your device against advanced viruses and malware and online threats. To install it, you will need to make sure that your device doesn't have any security software installed. If any available, then remove it first then install McAfee antivirus. Also, make sure that you are using a strong network connection. And your system meets the installation requirement for McAfee. To know the McAfee system requirements call McAfee UK to get in touch with the experts.