This property specifies the server name and the port when the session state is stored remotely. The stateConnectionString attribute is required when the Mode is set to StateServer.
Make sure the ASP.NET state service is running on the remote server that stores the session-state information. This service is installed with ASP.NET and is located by default at [drive:]\WINDOWS\Microsoft.NET\Framework\VersionNumber\aspnet_state.exe.
The following code example demonstrates how to get the StateConnectionString property. Refer to the code example in the SessionStateSection class topic to learn how to access the SessionStateSection object.