Graph API Get Calendar result in Resource not found

Question

Hi

Want to post/view calendar without user signing in by using the client_credentail workflow. however result in resource not found error. Tried to search but no solution found.

My setup

Using post to get the access token and check with jwt:

Tried in graph explore and delegated permiison path and it works: endpoint with https://graph.microsoft.com/v1.0/me/events

However when try with postman workflow:
https://graph.microsoft.com/v1.0/users/{id}/events
it always get the result not found error

Anything I missed out on this?

Answer 1

Hi,

For me, client credential flow for this scenario worked. Unfortunately, I am not able to repro your issue.
Also looking at the error you are getting, it seems the issue is not with the Graph API or roles, but with the way your mailbox is configured.

Please try a couple of things -

1. Make sure your mailbox is not inactive, soft-deleted, or is hosted on-premise.
2. If you are having a hybrid setup of Microsoft 365 with an on-premise exchange server, please look at this documentation once to rule out you are not missing anything.
3. Check this thread to see if this is not your scenario.
4. Lastly, please check if your tenant has not configured some rules around the mailbox.

If this helps, please consider accepting it as an answer and upvoting.
Thanks!