Directory access functions The directory access functions are specific to Microsoft Exchange Server. Applications that use directory access functions run on Windows NT Server computers on which the Microsoft Exchange Server Administrator program is installed. They are not available to Windows 95 clients. You can use directory access functions to create, manipulate, delete, export, and import directory objects. You can also use them to move user information from Windows NT Server and Novell NetWare accounts into the Microsoft Exchange Server directory. For more information, see Using Directory Access Functions.