12 October 2026
OAuth 2.0 vs OpenID Connect: What's the Difference and Which Do You Need?
OAuth 2.0 handles authorization, OpenID Connect handles authentication. Learn the difference, how the tokens compare, and which one your app needs.
Oauth
Getting an OAuth 2.0 access token shouldn't mean guessing which code still works. Follow practical authentication guides for C#, Node.js, and Microsoft Entra ID.
8 October 2026
A Modern Guide to Using OAuth 2.0 with Node.js
Get an OAuth 2.0 access token in Node.js with MSAL, then call Microsoft Graph using built-in fetch and credentials loaded from an environment file.
3 November 2025
A Modern Guide to Using OAuth 2.0 with C# and Visual Studio Code
Master OAuth 2.0 in .NET 9.0! This tutorial covers using OAuth 2 to acquire tokens and access Microsoft Graph user data.
24 January 2011
A Simple Guide to using OAuth with C#
Follow the original OAuth token exchange and signed API calls in this historical C# walkthrough, with a link to my newer OAuth 2.0 guide.