For Windows 2016
On the Windows Server 2016 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.