
In Outlook on the web, you can import events from an.ics file to your existing the.ics file format, such as Apple iCal, Google Calendar, and Mozilla Lightning. often have an "Add to calendar" link that you can use to download an iCal. An ICS file is a calendar file saved in a universal calendar format used by several email and calendar programs, including Microsoft Outlook, Google Calendar. Some platforms, like Google Calendar, will sync once you get back online. An ICS file containing all of your events will begin to download. the URL will end in the.ics format so that it can be exported to these calendars.