Unable to validate the 'id_token', no suitable ISecurityTokenValidator was found for: ''."

[adsengineer]

I am getting this error when using WebCodeFlowPkceClient. I have configured all the parameters and succeed in getting authorization code and token, but after that above error is showing. Can you, please, help me? Am I doing something wrong?
Those are my parameters:
options.ClientId = config["Connection:ClientId"];
options.ClientSecret = config["Connection:ClientSecret"];
options.Scope.Clear();
options.Authority = config["Connection:Uri"];
options.CallbackPath = new PathString("/signin");
options.SignInScheme = "Cookies";
options.RequireHttpsMetadata = true;
options.ResponseType = "code";
options.ResponseMode = "query";
options.UsePkce = true;
options.SaveTokens = true;
options.GetClaimsFromUserInfoEndpoint = true;

[damienbod]

Do you still have this problem, validating this and cannot reproduce. Is this a different repo?

Greetings Damien

[pekaaw]

I experienced pretty much the same thing, authenticating with Azure AD B2C. To figure out the problem I added temporary code to log the IdToken and AccessToken. In my case the IdToken was empty, and I figured out that I had not granted admin consent to the openid permission. For @adsengineer it looks like the IdToken is only a dot '.', so not a valid IdToken.

When I granted admin consent I managed to log in successfully with Authorization Code Flow, using .NET Framework 4.7.2 with the Microsoft.Owin.Security.OpenIdConnect package.