Scheduling and managing events using Outlook.com calendar
The family calendar in Outlook.com has moved to a new Outlook.com groups calendar. This change added the ability to invite others to family group events and to use a shared family email address.
The calendar is fully supported on Outlook.com and the Outlook mobile app but is no longer supported in other applications like the Windows 10 Mail app, the Outlook desktop app, as well as some third-party apps. None of your existing events or information were affected in the move.
We know that many of you would like to use your family calendar from other places and are actively investigating the best way to expose the calendar to a wider range of apps. You can find more details about this change and how to use the new calendar here: Use shared family calendars in Outlook.com.