Could not load file or assembly 'System.IdentityModel
<p>Hi i am getting this error when i am debugging the web application </p>

<blockquote>
  <p>Could not load file or assembly 'System.IdentityModel,
  Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' or
  one of its dependencies. The module was expected to contain an
  assembly manifest.</p>
</blockquote>

<p>Kindly tell me the right solution </p>
