Sharing Calendars via Delegation on Mac not working with Normal Shared Calendar

Hi there,

Apologies for slow response; I was on a long summer vacation and am still wading through emails that came in while I was gone.

I agree that there is likely an issue with the native Mac calendar app, as my understanding is that the issue only happens when the user creates an event from that iCal app. If the user creates the event from another app (iOS native app or an Outlook app), the changes sync correctly. I'm not sure how to debug further other than to report the issue directly to Apple. I believe the iCal app uses the EWS API, whereas Apple's iOS calendar app uses EAS so that would explain the difference between the two Apple apps.

I am curious why your company doesn't use Outlook Mac client though -- feel free to private message me! I strongly support using Outlook as it's definitely the superior experience 🙂