For Windows 2008 it is a little different

First, open the Server Manager by going to Start > Server Manager

In the Server Manager browse to the Security Information section in the right hand pane and click 'Configure IE ESC'. IE ESC is located in the very lower right-hand corner of the window.

In the Internet Explorer Enhanced Security Configuration window decide for whom you want IE ESC enabled or disabled and click OK.

It can be enabled/disabled for Administrators only or for all users

For Windows 2012 it is almost like 2008

On the Windows Server 2012 server desktop, locate and start the Server Manager.

Select Local Server (The server you are currently on and the one that needs IE Enhanced Security disabled)

On the right side of the Server Manager, you will find the IE Enhanced Security Configuration Setting. (The default is On)

You have two settings that can be disabled, one only affects the Administrators and the other all users. Make your selection to Off for Administrators, Users or both.