title: Some users needed to press F5 to get updated images
body: <p>I work on an ASP.NET MVC solution under IIS. In this solution I have some images. Yesterday I modified these images and published the solution under IIS. When I visited the pages containing these images I saw my modifications.</p>
  
  <p><strong>BUT</strong> some users didn't. They had to press F5 to have the modified images to show. They use Internet Explorer 11. </p>
  
  <p>Any idea why ?</p>