see detail steps at " McAfee 25 digit code activation"
Download McAfee with activation code summary-
So here I am telling you how to download in very brief if you don't want to read detailed steps, precautions, and terms. To download McAfee with activation code, first of all, you need to open a browser and type URL www.mcafee.com/activate. When you will go to that page then you can enter and redeem your McAfee activation code. After that, you need to login to your McAfee account. The next thing you will see that you can now download your McAfee.
In case you don't have a McAfee account then you need to create one. If you don't have any idea for creating a McAfee account then you can go to the same article of McAfee installation with product key or activation code to see in detail to create a McAfee account.