Calendar in Outlook.com has a dedicated birthday calendar that automatically populates with the known birthdays of everyone in your contact list. You can also add birthdays at any time.
In Calendar, click the arrow next to New, and then click Birthday.
Enter the person's name and birthday information, and then click Save.
The new birthday appears in your birthday calendar.
If you add a birthday to a contact in People, the birthday will be added to your calendar.
If you add a birthday in Calendar, and the name you enter matches someone in your contact list, the birthday will be added to their contact.
If you add a birthday in Calendar, and the person isn't in your contact list, they'll be added.
If you’ve connected your Outlook.com account to a social network like Facebook, Twitter or LinkedIn, and the contact adds his or her birth date in that network.
When a contact adds his or her birth date to their profile and shares it with you.
There are two ways to delete a birthday.
In Calendar, click the event and press the Delete key.
In People, delete their contact or the birth date from their contact.
You’ve connected your Outlook.com account to a social network like Facebook, Twitter or LinkedIn, and the contact deletes his or her birth date in that network.
You disconnect your Outlook.com account from the social network where you contact has his or her birthday info.
A contact removes his or her birth date from a profile they share with you.
If you have a lot of birthday events in your calendar, you might want to turn off reminders.
Clear the check box next to Get reminders for events and tasks.
Under Edit your reminder and calendar settings, click Birthday calendar.
You can't share the birthday calendar.
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