title: Unable to load SOS.dll extension in Visual Studion 2012
body: <p>I've started to read some materials on advanced debugging tools and techniques. I use VS2012 Ultimate and the target framework is .NET 4.0. I got to the point where I need to load SOS.dll in the Immediate window during a debug session and it just doesn't work. </p>
  
  <p>I tried these with no luck </p>
  
  <ul>
  <li>.load sos </li>
  <li>.load sos.dll </li>
  <li>.load C:\Windows\Microsoft.NET\Framework\v4.0.30319\sos.dll</li>
  </ul>
  
  <p>I always get this message: </p>
  
  <blockquote>
    <p>Invalid expression term '.'</p>
  </blockquote>
  
  <p>So, any idea ? What am I missing here ?</p>