The product key will never expire and that you will be offered a full replacement in an unlikely event that it stopped working. Product keys we sell are genuine, unused and working or refund! As a matter of fact, you can even check its authenticity online via its official website if applicable even before installation, see the specific product information page to know how. Product keys are freshly generated and is automatically sent to the client’s email after purchase together with the invoice. Do check your spam just in case the product key got there. If you have any additional instructions for your order, just let us know.