The AspSessionTimeout property specifies (in minutes) the default amount of time that a Session object is maintained after the last request associated with the object is made. You can override this property in script by using the Timeout property of the ASP built-in Session object.
You can use AspSessionTimeout to fine tune your ASP applications. Because Session objects consume memory resources, using this property to limit the lifetime of an individual Session makes your applications more scalable.
Setting this property at the IIsWebService level applies to all in-process and pooled out-of-process application keys, at all levels. Metabase settings at the IIsWebServer level or lower are ignored for in-process and pooled out-of-process applications. However, settings at the IIsWebServer level or lower are used if that key is an isolated out-of-process application.
This property is an application-level property.
You can configure this property at the following locations in the IIS metabase.
IIS Admin Object Type
Client: Requires Windows XP Professional, Windows 2000 Professional, or Windows NT Workstation 4.0.
Server: Requires Windows Server 2003, Windows 2000 Server, or Windows NT Server 4.0.