Hello,
In order to disable the enhanced security configuration you must do the following:
1) Close all IE browsers.
2) Open the "Server Manager"
3) Click on the top item in the tree labeled "Server Manager"
4) Open up the "Server Summary" tab.
5) Open the secondary tab named "Security Information"
6) Locate and open the "Configure IE ESC" link on the right of the window.
Thank you,