Microsoft Graph
A Microsoft programmability model that exposes REST APIs and client libraries to access data on Microsoft 365 services.
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code": "Authorization_RequestDenied",
"message": "Insufficient privileges to complete the operation.
Hi We did App registration but use is not able to login and we got above error.
Mind telling us what operation you are trying to perform? As you have added Delegate permissions under your app registration, you need to make sure that the user you run it under has the necessary admin role(s) assigned as well, just having the Graph API permissions is not enough.