Forum Post: The Caller not authenticated by the service

Hi Guyz......By using Wcf Service i am connecting to CRM. But i am stuck with one erro "The Caller not authenticated by the service" Though the user name and password of user is correct still it is giving this error. Can any one help me out. ClientCredentials cre1 = new ClientCredentials(); cre1.Windows.ClientCredential = new System.Net.NetworkCredential(username, password, Domain); Uri serviceUri = new Uri(URL); OrganizationServiceProxy proxy = new OrganizationServiceProxy(serviceUri, null, cre1, null); proxy.EnableProxyTypes(); IOrganizationService service = (IOrganizationService)proxy; isConnectionEstablished = true;