One of my add-ins, Formula Formatter, works well in Office 365. However, one client told me it cannot be loaded in Office Professional Plus 2016
.
Does anyone know what may be the reason? Should we do something special in the manifest xml for Office Professional Plus 2016
?
In its manifest, Formula Formatter specifies the requirement set ExcelAPI with a minimum version of 1.2. Per the documentation for that requirement set (https://dev.office.com/reference/add-ins/requirement-sets/excel-api-requirement-sets) your customer will need to be running "Version 1601 (Build 6741.2088) or later". Customers that have a non-subscription version of Office won't have that requirement set.
If you remove the requirement set from the manifest, your add-in would be available on Office 2016 but you would need to ensure that your add-in has a good user experience when they are not present.