The ASP.NET state service is used to manage session state on a computer. The ASP.NET state service is installed by default when Microsoft® Windows® Server 2003 is installed. The file aspnet_state.exe is installed on the remote server that will store session state information; the default location is systemroot\Microsoft.NET\Framework\version\aspnet_state.exe.
▸ To configure the ASP.NET state service
On the remote server that will store session state information, open Administrative Tools, and then click Services.
In the details pane, right-click ASP.NET State Service, and then click Properties.
On the General tab, in the Startup type list box, click Automatic.
Under Service status, click Start ...