In this post I show how how to add authentication to a sample ASP.NET Core Blazor Server app. The default .NET templates show how to use ASP.NET Identity or Azure for authentication, but in this post I show how to use Auth0 for authentication.

Authentication in Blazor Server

Blazor server is a stateful service. In normal operation, the Blazor server application running on the server maintains a SignalR connection to the user's browser, and sends diff updates to the browser. However, authentication for SignalR occurs when the connection is established, so you typically need to perform your authentication outside of the normal Blazor Server workflow.

#blazor