title: X-Frame Option is set to allow but safari shows Refuse to display
body: <p>I am working on a application which embeds tableau report in iframe. It runs perfectly on all browsers other than safari. As shown in the 2nd image it shows that error "Refuse to display.." but I have changed all the setting and added X-Frame-Options in my header like this</p>
  
  <pre><code> HttpContext.Current.Response.Headers.Remove("X-Frame-Options");
      Response.AddHeader("X-Frame-Options", "ALLOWALL");
  </code></pre>
  
  <p>After adding this in response header it shows X-Frame-Options = AllowAll show in in image 2 but it gives same "Refuse to display error.."</p>
  
  <p>Please let me know where I am going wrong. Please help me. For more info you can read </p>
  
  <p>[link]  <a href="https://stackoverflow.com/questions/35303859/tableau-reports-not-showing-in-iphone-and-ipad-in-asp-net-application">Tableau Reports not showing in iPhone and iPad in asp.net application</a></p>
  
  <p><a href="https://i.stack.imgur.com/0RyOJ.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/0RyOJ.png" alt="Header response shows X-Frame-Options Value"></a></p>
  
  <p><a href="https://i.stack.imgur.com/5TMan.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/5TMan.png" alt="Safari shows error"></a></p>