title: Request for the permission failed from a desktop app running on a network drive
body: <p>The following exception is raised when opening a WCF client from a .NET 4 desktop application. This only seems to be happening at one of our client installations:</p>
  
  <p><code>Request for the permission of type 'System.Net.WebPermission, System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089' failed</code></p>
  
  <p>Does anyone know how to resolve this?</p>