When I try to bring up the WildFly Administration console (http://localhost:9990/console/App.html) in IE 11, I get a blank page but it works fine in Chrome and Firefox. Looking at the source code of the blank page, it has the IE9 compatibility meta tag:
<meta http-equiv="X-UA-Compatible" content="IE=9">
While the blank page is displayed, in IE developer tools I changed emulation to "10", and the Admin console Login box displays immediately.
So how can fix this so I don't have to go into Developer tools each time when using IE11 (and we have to support customers who will use only IE11 due to office work restrictions).
This is a bug. I filed [HAL-907] Management Console does not show up in IE11 / WildFly 9 - JBoss Issue Tracker to track this. I'm not sure when / whether there will be an additional 9.0.x release. However the upcoming WildFly 10 release does not have this restriction. So switching to WildFly 10 will be another solution.