Не было указано в аутентификации, и не было обнаружено дефолтчалльенгшема
services.AddAuthentication(IISDefaults.AuthenticationScheme);
Hilarious Hyena
services.AddAuthentication(IISDefaults.AuthenticationScheme);
Its not an authentication issue, issue is beacuse IncludeXmlComments path is wrong.
verify the path IncludeXmlComments in AddSwaggerGen