IIS 8 on Windows Server 2012 Standard Edition

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ASP.NET

session

Hello Experts,

I have one issue with IIS 8.
I have deployed one site on IIS 8.
In site, My page have two buttons.
By on clicking button1 session variable has been generated. This is for test
but on clicking button2 the page has been terminated.

Every thing is working fine in IIS 7

My session is as under.
and i don't want to change my session state.

<system.web>
  <sessionState mode="InProc" timeout="20" cookieless="true"> </sessionState>
</system.web>

my code is as under.

 protected void button1_Click(object sender, EventArgs e)
    {
Session["mySession"] = "myValue";
}

 protected void button2_Click(object sender, EventArgs e)
 {
// Below code is terminate worker process in IIS 8 but it is working fine in IIS 7
Verify.MVerify objMVerify = new Verify.MVerify();
Boolean Ret1;
byte[] temp =File.ReadAllBytes(Server.MapPath("") + @"\rawData.raw");
Ret1 = objMVerify.VerifyFingerFromISOTemp(temp, temp);
///////////////////////////////////////////////////////////////////////
if(Session["mySession"] != null)
{
tdMessage.InnerHtml = "Session is not null";
}
else
{
tdMessage.InnerHtml = "Session is null";
}
}

but in IIS 7 It is working fine.

Any one have an idea?

Thanks in advance.