Before installing DeficiencyPop, ensure the database and application servers are set up. To prepare the servers: For new deployments, install a supported database on your database server. Install the OnBase Application Server. For installation information, see the Application Server module reference guide. Install the OnBase Patient Window. For installation and configuration information, see the Patient Window module reference guide. On the DeficiencyPop server, do the following: Install a supported server operating system. Install a supported version of IIS. Install .NET Framework. See Ensuring Proper IIS and .NET Installation.