title: User cannot Install Click once application
body: <p>I have a relatively simple support application which I have chosen to deploy to our support staff via click once.</p>
  
  <p>I assume it's still called Click-Once. I'm using the publish tab of the project's properties in VS2008.</p>
  
  <p>Several users have managed to click through to the url, download and run the application.</p>
  
  <p>One specific user cannot.</p>
  
  <p>He has .Net 3.5 SP1 installed and indeed reaches the publish page where he is offered the option to install. upon clicking this he is greeted with an error message</p>
  
  <p>The error message contains the following phrases </p>
  
  <ul>
  <li>Cannot start Application </li>
  <li>Application download did not succeed </li>
  <li>check your network connection or contact your system administrator Network service Provider </li>
  <li>No connection could be made because the target machine actively refused it</li>
  </ul>
  
  <p>I would love to know what might be causing this... </p>
  
  <p>I cannot understand why the server I have published to, would treat this user differently.</p>
  
  <p>Any ideas?</p>