c# - Requested client not authorized

Question

I am trying to get google users from my domain using google service account.

But it throws error

Error:"access_denied", Description:"Requested client not authorized.", Uri:""

My code

X509Certificate2 certificate = new X509Certificate2(key_path,
                         "notasecret", X509KeyStorageFlags.Exportable);

ServiceAccountCredential credential = new ServiceAccountCredential(
           new ServiceAccountCredential.Initializer("publickey.gserviceaccount.com")
           {   Scopes = scopes,
               User = "admin@domain.com"
           }.FromCertificate(certificate));

var service = new DirectoryService(new BaseClientService.Initializer()
        {
            HttpClientInitializer = credential,
            ApplicationName = "appname",
        });

service.Users.List().Domain = "domain.com";
Users results = service.Users.List().Execute();

Thanks in advance

Answer 1

Waitting for answers