Validation of view state MAC failed
<p>Please don't mark this post as <a href="http://stackoverflow.com/questions/5647525/validation-of-viewstate-mac-failed">duplicated.</a>. Please help me to fix my issue since I am very new to <strong>asp.net</strong> I have some difficulties with understanding.  </p>

<p>I am working on <strong>VS 2010</strong> and try to familiarize with <strong>asp.net web site.</strong> I have two web pages called <strong>Default.aspx and Result.aspx.</strong>  </p>

<p><strong>Default.aspx</strong>  </p>

<pre><code>&lt;form id="Form1" runat="server" action="Result.aspx"&gt;  
    //Some Controllers (Dynamically added textboxes and submit button)
&lt;/form&gt;  
</code></pre>

<p>Once I fill the form and when it is submit following error comes.  </p>

<p><strong>Validation of viewstate MAC failed. If this application is hosted by a Web Farm or cluster, ensure that  configuration specifies the same validationKey and validation algorithm. AutoGenerate cannot be used in a cluster.</strong>   </p>

<p>I tried to add <code>EnableViewStateMac="false"</code> but have no luck.  </p>

<p>Please advice me to fix this and appreciate if you could explain me why this comes. </p>
