unable to activate

Hello, My company bought several 2011 business licenses for our office of 500 people. Two of these licenses were used on employees computers who are no longer with us. The notes from the previous IT teams states that the previous keys were unregistered when the old computer was recycled. We...

Hello, Recently I had to format the drive on my mac. I reinstalled parallels desktop and when I enter my activation key I get the following message: "You have entered an upgrade key. Please confirm it with a key from the previous version." I only have the one activation code I received when I...