The default setting allows Microsoft Dynamics NAV to connect to a server using the default client network type assigned by SQL Server. Initially, this is the Named Pipes protocol. However, if the SQL Server Client Utilities have been installed on the client computer, you can change the setting using the Client Network Utility.
To specify the network type
In the development environment, on the File menu, choose Database, and then choose Open. The Open Database window opens.
Choose the Advanced tab.
In the Net Type field, choose the drop-down arrow to select one of the network types: Default, Named Pipes, or TCP/IP Sockets.
Choose the OK button to save your selection and close the window.