Hi Giles,
Any info in the event viewer?
Could be that the IIS is recycling, for some odd reason.
I would try to set session to STATESERVER.
Look here for ref:
http://msdn2.microsoft.com/en-us/lib...z9(vs.80).aspx
See if it resolves the Session problem u are experiencing.
Aris
"Giles Papworth" wrote:
> <sessionState mode="InProc" stateConnectionString="tcpip=127.0.0.1:42424"
> sqlConnectionString="data source=127.0.0.1;Trusted_Connection=yes"
> cookieless="false" timeout="20"/>
>
> "Aris Houbavlis" wrote:
>
> > what state server setting do u have?
> > InProc,
> > SqlServer,
> > StateServer,
> > Off (Disables session state)
> >
> > <system.web>
> > <sessionState mode="StateServer"
> > stateConnectionString="tcpip=SampleStateServer:424 24"
> > cookieless="false"
> > timeout="20"/>
> > ....
> > ....
> > ....
> > </system.web
> >
> > "Giles Papworth" wrote:
> >
> > > Thanks for that but it seems to have made no difference.
> > >
> > > "Aris Houbavlis" wrote:
> > >
> > > > <configuration>
> > > > <system.web>
> > > > <pages buffer="true" ...
> > > > ...
> > > > ...
> > > > ...
> > > > ...
> > > > </system.web>
> > > > </configuration>
> > > >
> > > >
> > > > "Giles Papworth" wrote:
> > > >
> > > > > What section in the web.config does that go in?
> > > > >
> > > > > "Aris Houbavlis" wrote:
> > > > >
> > > > > > Hi Giles,
> > > > > > Try adding this in your web.config
> > > > > > <pages buffer="true" enableSessionState="true" enableViewState="true"
> > > > > > enableViewStateMac="false" />
> > > > > >
> > > > > > Aris
> > > > > >
> > > > > > "Giles Papworth" wrote:
> > > > > >
> > > > > > > Also i have now changed my machine key and that seems to have resolved that
> > > > > > > problem but now the session seems to be ending everytime i have posted data
> > > > > > > to another page.
> > > > > > >
> > > > > > > "Aris Houbavlis" wrote:
> > > > > > >
> > > > > > > > Hi Giles,
> > > > > > > > There are 2 things you need to make sure of.
> > > > > > > > 1 . If these machines are part of a webfarm make sure all web.config
> > > > > > > > validationKey,
> > > > > > > > decryptionKey have the same value across all machines.
> > > > > > > > 2. All objects you place in viewstate are serializable.
> > > > > > > >
> > > > > > > > Thanks,
> > > > > > > > Aris
> > > > > > > >
> > > > > > > > "Giles Papworth" wrote:
> > > > > > > >
> > > > > > > > > I seem to be getting this error message all of a sudden on one of my web apps:
> > > > > > > > >
> > > > > > > > > [HttpException (0x80004005): Unable to validate data.]
> > > > > > > > > System.Web.Configuration.MachineKey.GetDecodedData (Byte[] buf, Byte[]
> > > > > > > > > modifier, Int32 start, Int32 length, Int32& dataLength) +195
> > > > > > > > > System.Web.UI.LosFormatter.Deserialize(String input) +60
> > > > > > > > >
> > > > > > > > > [HttpException (0x80004005): Authentication of viewstate failed. 1) If this
> > > > > > > > > is a cluster, edit <machineKey> configuration so all servers use the same
> > > > > > > > > validationKey and validation algorithm. AutoGenerate cannot be used in a
> > > > > > > > > cluster. 2) Viewstate can only be posted back to the same page. 3) The
> > > > > > > > > viewstate for this page might be corrupted.]
> > > > > > > > > System.Web.UI.LosFormatter.Deserialize(String input) +117
> > > > > > > > > System.Web.UI.Page.LoadPageStateFromPersistenceMed ium() +102
> > > > > > > > >
> > > > > > > > > [HttpException (0x80004005): Invalid_Viewstate
> > > > > > > > >
> > > > > > > > >
> > > > > > > > > And it goes on to explain about the page. On one development machine this
> > > > > > > > > works and then on mine this doesn't. Any ideas why this would suddenly start
> > > > > > > > > happening?
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