Oauth2 with Microsoft graph outlook.com

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C#

Hi,

Following Microsoft example on https://apps.dev.microsoft.com/portal/guided-setup/test?appType=mobileAndDesktopApp&appTech=windowsDesktop &appId= with the correct application identity I had tried to read my first email but on the line acquiring token

authResult = await App.PublicClientApp.AcquireTokenSilentAsync(_scopes, App.PublicClientApp.Users.FirstOrDefault());

users list is empty.


Any idea ?

What I have tried:

I had checked allow implicit flow without any effect. Searches on Google and here give me links similar problems but no solution...