JQuery ajax call returns 404

This code works fine when it is running locally (IISExpress). But it fails when I deploy it to the dev server.

It is confirmed that the controller is not hit when I make this call.

I have spend a lot of time to work on but still cannot figure it out. Really appreciate for any help. Big Thanks in advance


[GET] http://mydomain.net/Server/SetServerStatus?serverId=2&isActive=false 
404 (Not Found)

code:
        function SetServerStatus(serverId, isActive) {
            var actionUrl = '/Server/SetServerStatus?serverId=' + serverId + '&isActive=' + isActive
            $.ajax({
                url: actionUrl,
                type: 'GET',
                dataType: "JSON",
                success: function (data) {
                    var x = data;

                },
                error: function (xhr, ajaxOptions, error) {

                    alert($.parseJSON(xhr.responseText).message);

                }
            });
        }

Controller:
        [HttpGet]
        public ActionResult SetServerStatus(int serverId, bool isActive)
        {
            log.Info("\nCall SetServerStatus.  ServerId=" + serverId.ToString());

            Server note = _serverService.GetByID(serverId);
            note.ServerStatus = isActive ? (int)ServerStatus.Active : (int)ServerStatus.Inactive;
            _serverService.Update(note);

            ServerListItem noteViewModel = Mapper.Map<ServerListItem>(note);
            return Json(new { result = "success" }, JsonRequestBehavior.AllowGet);
        }