WebApi OAuth UseOAuthBearerAuthentication gives “Sequence contains more than one element” error

Question

I configured my WebApi OAuth 2.0 by these lines:

    app.UseOAuthBearerAuthentication(new OAuthBearerAuthenticationOptions
    {
        Provider = new OAuth         


        

Answer 1

It should be a bug! Use

app.UseOAuthAuthorizationServer(OAuthOptions);

instead of

app.UseOAuthBearerTokens(OAuthOptions);