Few days back, we had a requirement to use new D365 app for Outlook for one of our customer. After setting up mailbox and Server Side Synchronization(prerequisites for using this lightweight extension), when we clicked on Settings --> Apps for Dynamics 365, we got the below screen: We waited for few minutes and again checked … Continue reading D365 app for outlook error: This app can’t be installed. The manifest file for this app is too large. It must be smaller than 32 KB.