[The doc for authentication](https://docs.microsoft.com/en-us/aspnet/core/security/authentication/social/index) is out of date for 2.0 release where authentication was redone. See https://github.com/aspnet/Security/issues/1310 for the scope of changes. The doc also reads: "For Visual Studio 2017 RC1" even though VS 2017 shipped months ago. The instructions for external providers linked from this page are also outdated but workable.
The doc for authentication is out of date for 2.0 release where authentication was redone. See aspnet/Security#1310 for the scope of changes.
The doc also reads: "For Visual Studio 2017 RC1" even though VS 2017 shipped months ago.
The instructions for external providers linked from this page are also outdated but workable.