I create an iframe with content, the page is displayed without an error. When I refresh the iframe (after 3 seconds), I get an 404. I've tried different approaches like adding a metadata refresh tag, plain JS, jquery,... A 'working' example can be found here; https://jsfiddle.net/RaZoR_BlaZe/ezswtxk7/32/
<div class="second-row">
<iframe name="presentatie" id="presframe" scrolling="no" frameborder="0" src="https://docs.google.com/presentation/d/
13WCxr5uG4Jqw8bPJzB6dIdQ3DP2H4nBFRH8FHxlqK0Q/preview"></iframe>
</div>
setInterval(function() {
$('#presframe').contentWindow.location.reload(true);
}, 3000);