OAuth for Linkedin is not installed by default.
You have to NuGet a package called “Owin.Security.Providers”. It does LinkedIn Yahoo, etc.
Make sure you add the following to your Startup.Auth.cs
you can then add the following:
On Linked Developer portal (https://www.linkedin.com/developer/apps), you need to Create Application.
Once you fill out the necessary info, it will give you ClientID and Client Secret. Most importantly, you need to specify OAuth 2.0 Authorized Redirect URLs.
If you are doing local development, you probably will specify a URL like “https://localhost:<xxxx>/signin-linkedin” where <xxxx> is your own port #.