In the tutorial ASP.NET Core Authentication Tutorial there is a part at the top saying:
Heads up! This article refers to
version 1.0 of the .Net Core platform.
If you are looking for instructions on
how to secure .Net Core 2.0, please
refer to the Securing .Net Core 2.0
Applications with JWTs article. Have
fun!
The link in that text is supposed to do to an updated tutorial but it just goes to the outdated tutorial page itself. Just thought I’d let you know.