Graph API - Insufficient privileges to complete the operation

Question

When trying to access the Graph Service Client using I am receiving the error :

Code: Authorization_RequestDenied
Message: Insufficient privile

Answer 1

It seems like your application is not having enough rights to access AD information. You can follow the steps mentioned in below link/article to login to Azure portal and see if your application has got enough privileges to access AD.

http://www.morgantechspace.com/2016/01/graph-api-insufficient-privileges-to-complete-the-operation.html

https://docs.microsoft.com/en-us/azure/active-directory-b2c/active-directory-b2c-devquickstarts-graph-dotnet

Also I hope, the "authResult.AccessToken" is not null in your case. One thing, the second link above is having very detailed explanation on application access rights to AD. could be of help to you.