It's still required since without this IE's default setting for "Display intranet web pages in compatibility mode" will cause errors.
<title>noVNC</title>
<meta charset="utf-8">
+
+ <!-- Always force latest IE rendering engine (even in intranet) & Chrome Frame
+ Remove this if you use the .htaccess -->
+ <meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1" />
<!-- Icons (see app/images/icons/Makefile for what the sizes are for) -->
<link rel="icon" sizes="16x16" type="image/png" href="app/images/icons/novnc-16x16.png">