There are several things you can do to ensure your recurring events are not showing up multiple times on your Microsoft calendar:

1. Check the Date & Time field to make sure it is set correctly
2. Check the Recurrence field to make sure the interval, start and end dates and times are all set correctly
3. Check the Calendar field to make sure the events are listed correctly
4. Check the Reminder field to make sure the notifications are set appropriately
5. Check the Visibility field to make sure the events can be seen by everyone