title: Ajax requests in MVC 5 not work after publishing to IIS 7.5
body: <p>I have <code>asp.net mvc 5</code> project, which works fine in <code>visual studio</code>.  But when I publish it to <code>iis 7.5</code> some of the ajax responses stopped not working and the console isn't writing anything.  </p>
  
  <pre><code>    var data = {};
      data.Id = "12";
      data.MemberId = $('').val();
      data.Price = $('').val();
  
      console.log(JSON.stringify(data));  // viewing correct json data 
  
      $.ajax(url, {
          type: 'post',
          cache: false,
          dataType: 'json',
          contentType: 'application/json; charset=utf-8',
          data: JSON.stringify(data),
          success: function (data) {
              jsonObj = JSON.parse(data);
              processing(jsonObj);
          },
          error: function (xhr, errorText) {
              // don't call this function
              console.log('Error ' + xhr.responseText);
          },
      })
  </code></pre>
  
  <p>but if send empty data (only var data = {}, without Id, MemberId), works fine.</p>
  
  <p><strong>UPD</strong>  </p>
  
  <pre><code>[HttpPost]
  public JsonResult MyAction (MyJsonObject jsonObject)
  { }  
  
  public class MyJsonObject 
  {
      public int Id { get; set; }
      public int MemberId { get; set; }
      public double Price { get; set; }  
  }
  </code></pre>