how to delete birthdays from outlook calendar
Note: If you hide calendars online they will still be in Outlook (desktop client). You need to delete the calendar online to remove it from Outlook. To delete a calendar follow these steps: 1  While viewing the calendar, click Options. 2  Double click on a calendar link at the top of the page to open that calendar's settings.3  Click Delete in the bar at the top of the page.f you want birthdays or holidays added to your calendar but don't want to have separate calendars and use Outlook (desktop client), you can add the Holidays to Outlook from your desktop. If the outlook.com data file is set as default, Outlook will add the events automatically when birth dates are added to contacts.