title: Error while uploading .xlsx file using ExcelDataReader
body: <p>I am working on asp.net MVC project.</p>
  
  <p>I use <a href="https://github.com/ExcelDataReader/ExcelDataReader" rel="nofollow noreferrer">ExcelDataReader</a> component to read excel file records.</p>
  
  <p>Now when I published my project to server and upload a .xlsx file with uploader I get below mentioned exception message. There are no errors with local deployment but server.</p>
  
  <blockquote>
    <p>Access to the path '\Microsoft Corporation\Internet Information
    Services\7.5.7600.16385' is denied.</p>
  </blockquote>
  
  <p>and code where I am getting error is:</p>
  
  <pre><code>if (personsFile.FileExtension == ".xls")
  {
       Stream st = new MemoryStream(personsFile.FileArray);
       reader = ExcelReaderFactory.CreateBinaryReader(st);
  }
  else if (personsFile.FileExtension == ".xlsx")
  {
       Stream st = new MemoryStream(personsFile.FileArray);
       //exception occured on under line
       reader = ExcelReaderFactory.CreateOpenXmlReader(st);
  }
  </code></pre>
  
  <p>But when I upload a .xls file, I dont have any error.</p>
  
  <p>How to resolve issue with .xlsx extenstion?</p>