For McAfee activate product open the McAfee activation link in a web browser.On the activation page, choose the region or the country of your residence . Now enter the 25 character activation code. If you have made an offline purchase, you will find the code in the back of the retail card and for online purchase, you would have received an email containing the code.When you have entered the code click on the submit button and if prompted for click on the activate now button.