How to access a group calendar using Microsoft Graph Api?

Question

I'm trying to access a group calendar using the microsoft graph api as the application (I don't want to use delegate permissions).

If I request calendar events using the below I get the events for the user just fine.

https://graph.microsoft.com/v1.0/users/[emailAddress]/events

If I make a request to the following I get group information:

https://graph.microsoft.com/v1.0/groups/[groupId]/

If I make a request to this:

https://graph.microsoft.com/v1.0/groups/[groupId]/events

I get "Access is denied. Check credentials and try again." In azure portal, I've given my app service the following Application permissions:

Calendars.Read
Calendars.Read.Shared
Group.Read.All
User.Read.All

What am I missing?

Arillode

Answer 1

Applications permissions to list events is currently not supported. Also, listing events using delegated permissions with a Personal accounts is not supported. Please refer to List Events documentation which has the details. You can also refer to known limitations of Graph here. A user voice on this feature request is also available here and you can upvote the same so that the product team can include into their plans.

Soloman

User Voice does not exist any more. Can you update the link? – Oligarchy

Answer 2

In addition to this answer, also ensure that the authenticating user is a member of the target group. This applies even if the user:

• Is already set as an owner of the target group.
• Already approved the Group.Read.All delegate permission.

Failing to do so will result in the same error message mentioned in the question.

Kudos