Hello David, I tried this without success. Am I right in assuming that I can go to the My Application page, get the Secret from the application and use this in my console application, or do I have to go through OAURTH2 every time I execute the application? I have been trying to get a full example for a console application from OAUTH2 through to retrieving Contact data, but it seems no one has anything that works.   Here is my code, in which xxxxxx is the secret from My Application page:           Dim client = New RestClient ( "https://api.cc.email/v3/contacts?email={ntest3@abc.com}" )         Dim request = New RestRequest ( Method .GET)         request.AddHeader( "Content-Type" , "application/json" )         request.AddHeader( "Host" , "idfed.constantcontact.com" )         request.AddHeader( "Authorization" , "Basic xxxxxx" )         Dim response As IRestResponse = client.Execute(request)   Regards, Neil ... View more

Hello David, Thanks for your reply. I have tried the following: xxxxxxxx = the App Secret from the My Applications web page But is return 401 Unauthorized.           Dim authuri As New Uri ( "https://api.cc.email/v3/contacts?email={abc@123.com}" )         Dim request As WebRequest = WebRequest .Create(authuri)         request.Method = "GET"         request.ContentType = "application/json"         request.Headers.Add( "Authorization" , "Bearer {xxxxxxxx}" )         Dim response = request.GetResponse().GetResponseStream()         Dim reader As New StreamReader (response)         Dim res As String = reader.ReadToEnd()         reader.Close()         response.Close()     What am I doing wrong? Neil ... View more