title: "Unable to validate data" HttpException from my .net 2.0 application
body: <p>I am getting this exception from my ASP .net application running in a webfarm. </p>
  
  <pre><code>Exception Type: System.Web.HttpException
  Exception Message: Unable to validate data.
  
  ---- Stack Trace ----
   System.Web.Configuration.MachineKeySection.GetDecodedData(buf As Byte[], modifier As Byte[], start As Int32, length As Int32, dataLength As Int32&amp;)
   (unknown file): N 00294
   System.Web.UI.ObjectStateFormatter.Deserialize(inputString As String)
   (unknown file): N 00203
  </code></pre>
  
  <p>I have already configured static machine key in all the servers as per this article: <a href="http://support.microsoft.com/default.aspx?scid=kb;en-us;Q312906" rel="nofollow noreferrer">http://support.microsoft.com/default.aspx?scid=kb;en-us;Q312906</a>. (All servers have the same machine key)</p>
  
  <p>Any Ideas?</p>
  
  <p>I wonder why no one is responding to this? Is it just me?</p>