How to Disable NLA on the RDS 2012 Server To disable mandatory use of NLA by clients, in Server Manager console go to Remote Desktop Services ->Collections -> QuickSessionCollection, then Tasks -> Edit Properties, click Security and uncheck Allow connections only from computers running Remote Desktop with Network Level Authentication. Of course, you need tounderstand that disabling NLA at the server level reduces the system security and generally is not recommended. It is preferable to use the second method. How to Enable NLA at the Level of Windows XP Client NLA support