1. Open the Microsoft calendar app:

• On your computer, search for the Microsoft Calendar app and open it.
• On your mobile device, find the Microsoft Calendar app and open it.

2. Navigate to Settings:

• In the top right corner, select the Settings icon.

3. Select the birthday calendar:

• Under Calendars to show, look for Birthdays and uncheck the box to turn it off.

4. Save your settings:

• Save your settings and go back to the main calendar view.