Some of outlook events are not syncing with my calendar app for some customers

Anji Perera 1 Reputation point
2021-04-05T20:59:24.593+00:00

Hi, we have an Outlook sync with our calendar app.

We are using the below API to retrieve events onto our calendar app:
(Graph APIs)
client.api(/me/calendarView/delta?startDateTime=${startDate}&endDateTime=${endDate}).get()`

We don't receive some of the events through above API for some of our clients. However, when we test the same scenario with our test app accounts using our own outlook calendar we get all the events as expected.

Are there any account based restrictions? Can someone please help me understand why we can't retrieve all outlook events using the graph API for some of our users?

Microsoft Graph
Microsoft Graph
A Microsoft programmability model that exposes REST APIs and client libraries to access data on Microsoft 365 services.
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  1. Deva-MSFT 2,256 Reputation points Microsoft Employee
    2021-04-08T01:32:03.23+00:00

    (1) I would try to repro the issue outside of your code by using Graph Explorer or POSTMAN
    (2) In addition to above, i would use delta query or subscriptions/change notifications and see if it helps for the given time period.
    (3) Work with their administrators how they configured Application Access policy at their end.

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