How to Fix / Enable the Disappearing Add-in on the Ribbon

In this video we'll show you how to fix / enable the disappering excel add-in on the ribbon.
The Office security update (2016) has caused Add-in Ribbon Menu Bars to disappear when Microsoft Excel is opened.
Does your ribbon in Excel disappear periodically? What a frustrating issue!!!!
Use trusted location in Excel to fix the disappearing ribbon effect.