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Adding, importing and subscribing to other calendars

In the Outlook Web App (OWA), you can import events from an .ics file to your existing calendar or subscribe to a calendar online and receive automatic updates (known as an ICS subscription or an iCal subscription). You can import calendars from websites or calendar programs that support the .ics file format, such as Apple iCal, Google Calendar, and Mozilla Lightning.

The difference between importing and subscribing

Importing a calendar

When you import an .ics file, you get a snapshot of the events in the calendar at the time of import. Your calendar doesn't refresh the imported events automatically -- even if the calendar's owner makes an update. This is a good way to add events that aren't going to change to your existing calendar, like tide tables, or phases of the moon.

Subscribing to a calendar

Subscribing to an iCal online calendar connects it to your calendar. Whenever the owner of an iCal you've subscribed to makes changes to the events, Outlook on the web updates your calendar. This is a good way to track events that change frequently, like movie times or a school calendar.

Set-up instructions