As of October 31, 2018, Microsoft Office 365 will remove. in case that had something to do with it. Resetting the Calendar app could also help fix issues, causing events not to show up within the app. I did try various 'Show As' settings like 'Free', 'Busy', etc. I have Googled and tried a number of different things.hoping to find something like a 'show only past appointments' setting or something that I could turn off! The only thing I haven't tried is deleting the local profile and recreating it.
Again, they are visible online (and on my iPhone 6s). If I go to email and then back to calendar or just wait a few will vanish. If I edit a future appointment, it shows up on my desktop. Those future appointments show up when I login online to O365, just not on my desktop. On my desktop (Outlook 2016) calendar, I see all past appointments, but no future appointments except for the Holiday Calendar. Everything was working fine until a few days ago, the following situation came up. I have 3 calendars (one of them is the Holiday Calendar).
On my computer we have Office 2016 which includes Outlook, and it is attached via exchange to my O365 account. At work we have email/calendar stuff on Office 365 (online).
