Introduction In this brief post, I will share the solution to a recurring issue within our environment where a Microsoft 365 add-in (also known as an integrated app) deployed from the Microsoft 365 admin center was frequently missing in Outlook. The custom integrated app in question is deployed by uploading an add-in manifest to the Microsoft 365 admin center. From there, it is assigned to either the entire organization or a selected group of users. In this instance, the add-in manifest was u...
