How can I use the Microsoft Graph API to import/subscribe an Office365 user to a calendar hosted at a URL in iCal format? For example, suppose I have a calendar hosted at https://example.org/events.ical and I want this calendar to appear in a user's Outlook hosted on Office365?
If I were doing it manually I'd follow these instructions. But I can't find a Graph API for doing it.
Doing the AzureAD auth/permissions/token isn't an issue, I have that all working. It's just which API to call for Outlook on Office365.
I'm afraid this isn't a supported method. You would need to parse the events from the iCal feed in your app and then use Graph to create the actual events.