Calendar events created on iPhone automatically changing default alert from 'None' to 'Time of Event'


Senior Member
Outlook version
Email Account
Exchange Server
My iPhone & computer sync through a Office 365/Exchange account.

I have my Desktop Outlook calendar default set not to create a reminder when I create an appointment. this works perfectly and as expected when I create an appointment from the Desktop.

On my iPhone (IOS 16.7), I have settings/calendar "Default Alert Times" set to NONE for birthdays, events and all day events.

When I create an event in the the calendar using the phone and fill in the title of event and some notes (and verifying that default alert box is set to NONE) and then save it. Upon checking the details of that event the alert is set to "at time of the event" (and even if I dont check it I get an alert at time of event).

If I create the event with the phone offline and in airplane mode the alert is not changed from what I set it to, NONE.
When I got back online and the event syncs with the server the alert is changed to "at time of event" again.

My OWA WebMail calendar settings are set to "15 min before event". There is no option to disable the default alert time on OWA that I can see, only to choose "at time of event" or how long prior. I would love t be able to turn this off for OWA created events but it doesn't appear to be what the phone is picking up anyway since I have it set to "15 min prior" and the phone quirk is changing it to "time of event"

How can I fix this weird behavior on the phone it is very distracting to have alarms going off all day on the phone and outlook reminder windows popping up all the time. I dont want to disable alerts for all calendar items as once and a while I do need the alerts.
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