I have an on premise exchange 2016 CU 20 server in a hybrid environment w/ 365. when my migrated 365 users view our on prem public folder calendars in their outlook client, everything looks correct, all appointments show up. when they favorite that calendar and go into outlook on the web for 365, then click on the radio button for that public folder calendar, their personal calendar items are duplicated, but no public folder appointments are displayed. this is the case for all my migrated users, for all pf calendars using different web browsers. i have attached some screen shots to demonstrate the issue. ![82357-calendar-example-1.jpg][1] ![82511-calendar-example-2.jpg][2] [1]: /answers/storage/attachments/82357-calendar-example-1.jpg [2]: /answers/storage/attachments/82511-calendar-example-2.jpg