Microsoft Graph API Error 403 when requesting List conversations

Question

I am trying to write a Python script in Jupyter Notebook to connect to the Graph API on behalf of the user. I have successfully managed to acquire access token and retrieved List groups. When I try to request "/groups/{id}/conversations" code returns error.
What I done:
Created App on Azure Directory

1. Given below permissions
   Delegated and Application Permission: Group.Read.All
2. Given admin consent
3. Got the Access token using MSAL:
   scopes = ['https://graph.microsoft.com/.default']

Create a PublicClientApplication instance

app = PublicClientApplication(client_id, authority=f'https://login.microsoftonline.com/{tenant_id}')

Start the Device Code Flow

result = app.initiate_device_flow(scopes=scopes)

token = app.acquire_token_by_device_flow(result)

access_token = token['access_token']

1. Received access token from above API
2. Retrieved List groups.
3. When sending request on this endpoint "https://graph.microsoft.com/v1.0/groups/{id}/conversations"
   I getting error:

Error: 403 - {"error":{"code":"ErrorAccessDenied","message":"Access is denied. Check credentials and try again., User 'user_id' not authorized to access group 'group_mail'. Reason: '(0xD10)'."}}

User is Global admin.

Answer 1

Hi @Johnny Gabritchidze

This issue has nothing to do with permissions, the logged in user must be the owner of the group to retrieve the list of conversations in the group.

Hope this helps.

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