Sharepoint unauthorized access with PnP and SSO token

Michal Banachiewicz 1 Reputation point
2022-10-14T13:23:15.433+00:00

Hi,

I need to develop a SharePoint WPF app that will upload and download files into Office 365 SP.
It needs to use SSO as we need to know who was doing the changes and have best security control.
I am stuck this is what I got:

  1. Azure AD App set up:

250410-image.png

  1. App registered on the site:
    250523-image.png
  2. The simplest C# code to do the call sharepoint API:

250541-image.png

  1. And the result:

250440-image.png

Why?

What am I missing?

SharePoint
SharePoint
A group of Microsoft Products and technologies used for sharing and managing content, knowledge, and applications.
9,794 questions
SharePoint Development
SharePoint Development
SharePoint: A group of Microsoft Products and technologies used for sharing and managing content, knowledge, and applications.Development: The process of researching, productizing, and refining new or existing technologies.
2,701 questions
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1 answer

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  1. RaytheonXie_MSFT 32,081 Reputation points Microsoft Vendor
    2022-10-24T06:57:23.91+00:00

    Hi @Michal Banachiewicz
    You will need application type permission to retrieve access token by C# code. Please refer to following permission

    253417-image.png


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