Hi @ Sivaprasad Derangula If you are trying to get event deltas for other users, do not use Graph Explorer as this endpoint is only available in the application context. Please go to MS Entra ID, find your app and grant it the Calendars.Read application permission , then use the client credentials flow in Postman to request the access token and call the API endpoint. Hope this helps. If the reply is helpful, please click Accept Answer and kindly upvote it. If you have additional questions about this answer, please click Comment .

I'm able query event data of a resource account using calendarView delta, I receive events as well as deltaLink. But when I use the deltaLink to fetch incremental changes, I'm getting 403 error. What am I doing wrong?

Sivaprasad Derangula 5

Screenshot 2024-04-30 145705

1 answer

CarlZhao-MSFT 37,466 Reputation points

2024-05-01T03:23:34.43+00:00

Hi @Sivaprasad Derangula

If you are trying to get event deltas for other users, do not use Graph Explorer as this endpoint is only available in the application context.

Please go to MS Entra ID, find your app and grant it the Calendars.Read application permission, then use the client credentials flow in Postman to request the access token and call the API endpoint.

Hope this helps.

If the reply is helpful, please click Accept Answer and kindly upvote it. If you have additional questions about this answer, please click Comment.
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Віталій Мазуренко 20 Reputation points

2024-05-01T14:36:43.4133333+00:00

Hi CarlZhao-MSFT, I'm working with Sivaprasad on this project.

We want to analyze room usage using calendar events data. We've implemented the authorization code flow so we don't need a global MS 365 admin for integration.

We thought we could access room calendar events by setting up delegates for the room. For example, if my user is a delegate of Room1, I can see its events. But this doesn't seem to be working.

Are there any solutions for accessing room calendars without using client credentials flow? We know about Graph API's calendar get schedule, but the response is too simple and doesn't have IDs, so we can't implement sync efficiently.

Sivaprasad Derangula 5 Reputation points

2024-05-06T05:58:20.4+00:00

I have created a node.js service which is having the same issue. If it is something to do with the permissions or the type of authentication, I should get the same 403 error for the first request itself and I should not get deltaToken along with the response.
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I'm able query event data of a resource account using calendarView delta, I receive events as well as deltaLink. But when I use the deltaLink to fetch incremental changes, I'm getting 403 error. What am I doing wrong?

1 answer