I typically purchase McAfee at Staples or some other retail outlet on sale. When I activate a key I usual write the activation and expiry date on the card that had the key on it.
I recently found an opened retail box on the shelf over my computer. There is nothing written on the card containing the key. I don't recall purchasing an extra activation code and I usually do not even open the box until i go to use the key. As a result, I have no idea if this key is used or not.
It used to be I could go into purchase history and it showed the activation keys of all the old versions I activated, but no longer.
Is there some way of checking if this key is still unused? other than trying to install it I mean?