People who already use IE 10 will have probably seen this phenomenon while connecting to an Access Gateway Enterprise site. The browser window remains empty after connecting to the AGEE URL. The logon prompt is only visible after switching to compatibility mode. A similar problem has been described on this site a few years ago, s. AAC und IE 8.0

The solution is similar but the files are different.

With Access Gateway Enterprise the file “/netscaler/ns_gui/vpn/index.html” has to be changed according to the following listing (red/bold line added):

<HTML><HEAD><TITLE>Citrix Access Gateway</TITLE>
<link rel="SHORTCUT ICON" href="/vpn/images/AccessGateway.ico" type="image/vnd.microsoft.icon">
<META http-equiv="X-UA-Compatible" content="IE=EmulateIE9" />
<META http-equiv="Content-Type" content="text/html; charset=UTF-8">
<META content=noindex,nofollow,noarchive name=robots>
<LINK href="/vpn/images/caxtonstyle.css" type=text/css rel=STYLESHEET>
<script type="text/javascript" src="/vpn/resources.js"></script>
<script type="text/javascript" language="javascript">
var Resources = new ResourceManager("resources/{lang}", "logon");
</script>

If the fix is working (! close the browser and reopen it !), don’t forget to make this change persistent since the Access Gateway Enterprise “forgets” all the modifications during a reboot! The following Citrix KB article describes, how to make changes survive a reboot: How to Retain the Custom Settings made to the NetScaler Appliance after it is Restarted

Regards
Ecki