Event attachment issue for attendees

Question

Hi all ,
I am trying to create outlook meeting event with multiple attendee using following API :
POST https://graph.microsoft.com/v1.0/me/events
And for the same event adding an attachment as an organizer using :
POST https://graph.microsoft.com/v1.0/me/events/{eventID}/attachments
As per expectation the event with all the content & attachment data should be visible to organizer as well as to all attendees . But from the event "Attachment" is missing for all the attendees whereas it is coming as expected for organizer.
Do provide some solution to avoid this unrealistic behavior.
Thank you ,
Vishal Malviya

Answer 1

Hello @Malviya, Vishal

Thanks for reaching out!

I'm able to replicate this at my end. Per my understanding, sending of an updated invitation doesn't occur when an attachment is added to the existing event.

As a workaround, you can update the event (by adding the attendees) post adding the attachments to the event. Please follow below steps for the same.

Create an event (excluding attendees in request body), refer Create Event:

POST https://graph.microsoft.com/v1.0/me/events

Attach a file to the event, refer Add Attachment:

POST https://graph.microsoft.com/v1.0/me/events/{eventId}/attachments

Update the existing event with the attendees' array in request body, refer Update Event:

PATCH https://graph.microsoft.com/v1.0/me/events/{eventId}

Hope this helps.

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Answer 2

If you add some text to the event body... for example: "file added", Then it works :0)