About Microsoft Office subscription products

Your subscription for Microsoft Office begins when you install and activate your product. As your subscription expiry date approaches, you'll receive reminders to renew your subscription. If you fail to activate after installing the product, or you don't renew your subscription before it expires, Microsoft Office will go into Reduced Functionality Mode. In Reduced Functionality Mode, you will not be able to create new documents, and additional functionality may be disabled. No existing Office files will be harmed while the product is in reduced functionality mode.

Also, through the Microsoft Office Activation Wizard, you may update or change your personal customer information held at Microsoft at any time either over the Internet or by telephone.