To fix the problem of duplicate or overlapping appointments in your Outlook calendar, follow these steps:

1. Check any recent calendar changes to make sure that no appointments have been accidentally rescheduled.


2. Delete any unnecessary appointments to limit the amount of duplicate dates.


3. Set a limit on how many reminders you can receive for each appointment.


4. Use the Outlook calendar’s automatic scheduling feature to set reminders.


5. Keep your calendar organized by managing its view.