Using Microsoft Graph API in a Web API without any user interaction screen

Question

Summary:

1. I have a WinForms app where multiple users from my organization login to.
2. From within this WinForm app, I want to call my Web API which internall

Answer 1

You can get this by app-only authentication method. Get an app-only access token and use it for authentication.

I am also struggling on a similar type of question and I need to retrieve planner tasks. For planner tasks app-only scope is not supported but In your case I think it should work

Read both these links for more details.

https://graph.microsoft.io/en-us/docs/authorization/app_only

https://graph.microsoft.io/en-us/docs/authorization/permission_scopes