First of all, You need to open the activation link provided at the back of your retail card. However, you can activate McAfee Security or any other product type, Such as McAfee Antivirus Plus, McAfee Live Safe, McAfee Internet Security and McAfee Total Protection just by visiting at www.mcafee.com/activate or you can also use the productwise activation web links that you can find below to this article.
To redeem your 25 digit activation code just open the web address www.mcafee.com/activate and proceed to next step.
Create a new account or Login to your Existing McAfee Account to complete your McAfee Activation Process.
After the successful activation of your product just need to add your device from your McAfee account to start the download.
Its easy to know whether your McAfee/Activate code is Redeemed successfully or not, First you need to go on www.mcafee.com/activate then enter your product key and all other required details, If your Activation code is already been redeemed then it will show you the message about it with the email address you used to redeem, If you are getting any kind of error that means your activation code not redeemed yet and not available for download in your account.
If you have a CD/DVD of brand new McAfee Security product then just insert it into your computer's CD/DVD drive and wait for auto popup of Installation Screen. If you are not getting an popup then just manually explore the CD/DVD drive and run the McAfee setup file. You can find your product activation code on your CD/DVD box.