It should be
Application.SetOption "Show Status Bar", False
This is the code that hides or shows the status bar, depending on whether you enter true or false for the final argument. If you haven't found it yet, go into code view and search for "Status Bar" by using the ctrl+f search function. If you don't find it in the login form, it is probably in the form that is opening after login. I personally use this code in the On Open/On Activate functions in my "Home" form that opens after the user logs in.