ASP.NET Reportviewer shows reports when i use sessionstate "InProc" but does not when i use "StateServer"

I have my asp.net state service enabled and configured my session state config as per below but my reports keep saying "ASP.NET session has expired" when i try to generate my reports using reportviewer (I am using VS2005):

<sessionState mode="StateServer" stateConnectionString="tcpip=localhost:42424" cookieless="false" timeout="80"/>

Now, it does work when using in process session state as follows:

<sessi开发者_如何转开发onState mode="InProc" timeout="80"/>

I want to use StateServer out-of-process session state but my reports always expire. Any idea why? Thanks.

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Reportviewer should still work using StateServer as stated on this link. To use StateServer, the "ASP.NET State Service" must be running.