How Delete Birthdays?

[Mesbah]

Office 2016
Win10

In list My Calendars there is a Birthday Calendar that contains some unwanted birthdays I wish to delete. But pop up error message says they are Read-Only cannot delete. What is solution other than delete them in my Contacts. Thanks all.

 

[Pete]

Go to outlook.com and delete the birthdays there.

This can depend on what account that calendar is connected to (you probably won't be able to delete birthdays from a linked Facebook account).

 

[orlbuckeye]

Yes alot of the birthdays are from friendsthat are sync'd on facebook or other social networks.