If you have a CAG with AAC in place and once tried to do a login with Internet Explorer 10, you might know that when you enter your credentials, it always returns back to the login prompt. The issue is IE10. If you enable the compatibility view in IE10, the issue is gone. A better way to fix it is so add a meta tag into the webpage that will automatically enable the compatibility mode in IE10:
Add the following line into the meta header part of the file BasePage.aspx:
<META http-equiv=”X-UA-Compatible” content=”IE=EmulateIE9″ />
The BasePage.aspx file can be found in the root of your logon point on the AAC server.