title: Application experienced internal error loading the SSL libraries in asp.net MVC and FileContentResult
body: <p>The MVC application am developing has feature to upload/download files that supports files of type- xls,xlsm,xlsx, doc,docx,pdf,msg etc.</p>
  
  <p>Recently, the code for downloading the file got modified to return FileResult form action method instead of, giving link to the file in server. Given the code below: </p>
  
  <pre><code>public async Task&lt;ActionResult&gt; ShowFile()
  {
     return new FileContentResult(FileBytes, mimeType);
  }
  </code></pre>
  
  <p>The above code in windows7 machines throwing Microsoft Excel Security Warning popup with below message, But the code is working fine in windows 10 IE 11</p>
  
  <pre><code>The application experienced an internal error loading the SSL libraries
  </code></pre>
  
  <p>When the code modified as below, got the warning message stop displaying.</p>
  
  <pre><code>return this.File(response.FileBytes, mimeType, response.FileName);
  </code></pre>
  
  <p>Can someone help understand what actually causing the issue with returning the FileContentResult as response from the Action Result</p>