Outlook calendar not updating icloud
You can migrate appointments from the broken calendar to the new, working shared calendar by logging into the i Cloud Web Page and manually changing each appointment's calendar.
This is very time consuming if you have many appointments.
Problem: Synching a shared calendar did not work from my Mac to i Phone (using i Cloud), but worked from i Phone to Mac.
On this same page are also instructions for other apps and devices. On the Tools menu, click Trust Center, and then click Add-ins. View the add-ins and application extensions that are categorized as follows: ◦Active Application Add-ins Lists the extensions that are registered and currently running in your Office program.The new shared calendar should accept new appointments and sync them to all devices, but it won't have the appointments from your old broken shared calendar.The appointments from that calendar will have to be migrated to the new calendar.Calendar on the drop down; if the event type shows under "on my mac", select the same colour under the "i Cloud" portion Next refresh your phone calendar as per above, by swiping down on the (daily) notes section of the calendar app. I had this problem and turned out that a setting had been put in place to only sync calendars 1 month back (Go to Settings. I changed it to Sync All Events, turned phone off then on, and voila.i Cloud calendar, it is possible that syncing no longer works for that entire calendar.