Installing Office Add-Ins
This page provides instructions on how to install Office Add-Ins from the Microsoft Store. The process varies slightly depending on which Office application is used and the version of the application.
Note that you need a Microsoft account in order to be able to install, try, and purchase Add-Is from the Microsoft Office store.
If you have Excel 2016 Version 16.0.6769.0000 or greater or are using Excel online you may be able to start your Add-In from a section of the Excel ribbon. If and where the Add-In is located on the ribbon is determined by the Developer of the Add-In. For example, the Compare and Merge Add-In is available as a new section of the Data Menu/Tab of Excel.
For earlier versions of Excel or if the developer has not designed the Add-In to be added to the ribbon you start your Add-In using the Add-Ins section of the ribbon as described above. If the Add-In has been used previously in the current workbook it may open automatically when you Start Excel.