Hi @Ravinder Kaur
Welcome to our forum!
Please kindly understand that the Outlook tag here we mainly focus on general issues about Outlook desktop client. Looks like the issue is more related to Graph API, which we are not very familiar. The following is for informational purposes only.
According to my search, this document details an example of setting calendar permissions, you can refer to: https://learn.microsoft.com/en-us/graph/outlook-share-or-delegate-calendar?tabs=http.
In addition, there is a similar thread provided by the method you can refer to:
Drop and from your list of requested scopes. Calendars.ReadCalendars.ReadWrie
- In order to ensure this change is reflected in the user's account, you'll need to re-authenticate the user with the query param auth URI.
prompt=consent
Hope this helps!
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