How to open received calendar

If you receive the calendar (*.ics file), you can open by doing one of the following:

• In the Reading pane, click the Open this Calendar:
  
• Double-click on the message and on the Message tab, in the Open group, click Open this Calendar:
  

Click Yes in the Outlook message:

Now you can see the shared calendar:

See also this tip in French: Comment ouvrir le calendrier reçu.