Establishing OAuth 2.0 Authentication to SharePoint Online REST Services in .NET
Introduction into how to use OAuth 2.0 to authenticate to SharePoint Online
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In this article, I will share how to authenticate with OAuth 2.0 on Office 365’s SharePoint Online platform. The process includes registration of an app on Entra ID with certificate authentication, obtaining an OAuth 2.0 access token via .NET, and authenticating to SharePoint Online’s REST Services using the access token.