My appointments in the Outlook calendar have doubled and tripled up on my iPhone and iPad. I tried the iCloud and have dumped that from all devices as far as syncing.
I have only one calendar in Outlook. The Apple devices insist on a second calendar called Birthdays. That calendar appears to have nothing in it.
In iTunes I have said to not sync the calendar and that gets the calendar erased on the iPhone. I then sync and replace the calendar on the iPhone and the doubles and triples show. I have verified the calendar on Outlook has no duplicate items. The same happens on the iPad.
iCloud is turned off for all items except Find my Device on the Apple items.
Thanks in Advance.