Steps to Install McAfee products · Go to your McAfee Antivirus software and Open it. · Enter the 25 digits alpha-numeric product key that was mailed to you by ... McAfee activate product key or code. · Enter your code. Fill your 25 digit McAfee activation key. (Look for it on the card you purchased) · Go to www McAfee com activate, Official Mcafee website. · Now, Enter your activation code. · Go to Downloads and Devices. · Download, Save and Run McAfee Installer.Using your device, visit www.Mcafee/activate Then, type the activation code in the box · Make sure to enter the code as it is mentioned on your card · Then, ...Mcafee com activate: Login, enter activation key/code to redeem card at mcafee com activate product key, download & install McAfee.