I am working with iCloud, iPhone and Macbook Pro on Yosemite.

I receive ICS calendar invites via mail from a user using Outlook. When I click on the ICS file in the mail, it opens and I can add it to my calendar without a problem. It also syncs nicely on all my devices.

However, the sender of the invite does not get a confirmation, in the meeting properties I'm shown as "did not reply". When I open the invite in my calendar, I have no option to accept or send a notification.

In short: ICS invites are added to my calendar but the organizer does not receive a notification.

How can I send an accept notification?

  • is that a google calendar ? – Ruskes Jul 30 '15 at 16:20
  • No - it is the stock Apple Calendar App on OS X and iOS together with an iCloud mail/calendar account – Beamerman Aug 1 '15 at 7:28

Open the Contacts app, select your own email address in the list of contacts. In the menu on top of the screen, go to "Card" -> "Make this my card". Reload calendar. Then it should work, you will get a notification popup with accept/decline buttons. (I just had the same problem, on a Mac running Yosemite) Source

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