If it is an enterprise subscription agreement, you must renew the contract in order to continue using the software or, alternatively, you have the option to purchase the licenses, if you do not renew them, you must uninstall them. software-license-management.blogspot.com/2010/08/walking-away-from-microsoft-licensing.html When signing the contract, the customer must define and communicate Microsoft the number of desktop computers or qualified users and the desired Microsoft Enterprise products or enterprise online services. This information is the first purchase. Each anniversary is due to a Collection Order (True Up Order) for additional desktop computers or qualified users, on the basis of which the total cost of the previous year is calculated. Under a traditional on-premise-Microsoft enterprise agreement, the customer is allowed to license enterprise products individually or as a standard platform. However, at least one enterprise product must be standardized company-wide. There are more and more licensing and subscription optimization challenges that need to be addressed in transactions with Microsoft, as well as new costs, flexibility, and licensing/subscription opportunities that you can take advantage of. As Microsoft continues its metamorphosis and business budget and usage requirements change rapidly, customers should prepare for a more demanding purchasing and supplier management environment. Alternatively, the customer can sign an enterprise online service agreement with Microsoft. This option does not require enterprise-wide standardization.