McAfee activation key is basically used when you need to activate the antivirus software in your computer after installing it. If you have lost the key, you must be worried. You just need to relax as you can easily retrieve the McAfee activation key on your own. But if you feel that you need immediate assistance, you can get in touch with McAfee customer service number to avail assistance from professionals who provide you with the most suitable solutions in no time at all. All you are required do is to make a call, and they will do the rest.