Export > Advanced options > UI > 
Show/Hide UI
 
 
 

Activate the Show/Hide UI option to display the FBX UI. This option is active by default.

Disable this option to hide the FBX UI for future operations.

If you disable this option, the following message appears:

NoteIf you disable Show/Hide UI, this UI is NOT visible for future export operations. To restore UI visibility, hold down the SHIFT key during export.

During your next export operation, the following message displays:

Hold the Shift key of your keyboard to display the FBX UI.

NoteThe Maya FBX Plug-in sets this option independently for export and import plug-ins. This means that if you want to hide the FBX UI for both the FBX Exporter and Importer windows, you must set this option separately in both UIs.