Microsoft Graph authentication and authorization overview

Learn how to authenticate and work with permissions to securely access data through Microsoft Graph. Explore the following documentation to learn about app registration, authentication libraries, authorization, and other parts of the Microsoft identity platform that support Microsoft Graph development.

Get started

Concept

• Authentication and authorization basics
• App registration
• Choose an authentication provider
• Permissions overview

video

• Microsoft Graph and app registration (7:29)
• How delegated permissions work (1:21)

Authorize your app

How-To Guide

• Get access on behalf of a user
• Get access without a user

Reference

• Permissions reference

Manage your app

How-To Guide

• Manage app access
• Limit mailbox access

Reference

• Authorization errors

Auth SDKs - MSAL

Download

• Android
• Angular
• ASP.NET
• iOS
• JavaScript
• Python
• UWP
• Xamarin

Auth SDKs - Open source

Download

• Android
• iOS
• Java
• JavaScript
• Node.js
• PHP
• Python
• Ruby
• React Native