title: IIS don't show Silverlight 5 application on work server in ASP.NET MVC app
body: <p>My SL app shows correctly in all browsers (Opera, FF, IE) in all  web servers (embedded, IIS 7.5) on my develompment machine. But in work web server (IIS 7.5) no one browser show my SL app. No error, nothing - just empty place. But it contains all markup of my SL app:</p>
  
  <pre><code>&lt;object data="data:application/x-silverlight-2," type="application/x-silverlight-2" width="200px" height="40px"&gt;
            &lt;param name="source" value="@Url.Content("~/Apps/SilverlightApplication1.xap")"/&gt;
            &lt;param name="onError" value="onSilverlightError" /&gt;
            &lt;param name="background" value="white" /&gt;
            &lt;param name="minRuntimeVersion" value="5.0.61118.0" /&gt;
            &lt;param name="autoUpgrade" value="true" /&gt;
            &lt;a href="http://go.microsoft.com/fwlink/?LinkID=149156&amp;v=5.0.61118.0" style="text-decoration:none"&gt;
                &lt;img src="http://go.microsoft.com/fwlink/?LinkId=161376" alt="Get Microsoft Silverlight" style="border-style:none"/&gt;
            &lt;/a&gt;
  &lt;/object&gt;
  </code></pre>
  
  <p>In addition, on my development machine I have the "Setup SL app on this PC..." button in SL context menu, but not on my work server.</p>
  
  <p>All IISs - on development and work server machines - have settings ".NET 4 FW" for app pool .NET version and integrated pipeline.</p>
  
  <p>I can get the .xap file directly through the browser's address bar but can't get one through the HTML page.</p>
  
  <p>It seems that the SL app just is not visible on my work server. How to fix it?</p>
  
  <p>Addition. There is no any Silverlight development or client framework on the work server - can it be clue?</p>
  
  <p><strong>UPDATE.</strong> I changed data and type attributes in the object tag to "application/x-silverlight-app". Now the "invite to install SL" image appears instead of my SL app. But I already have the newest version of SL plugin, and while installing the SL the installer tells me about it.</p>