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I am accessing a web service using WCF. Using WSHttpBinding, Security mode is set Transport (https) and client credential type is Basic. When I try to access the service using the proxy, getting an 401 unauthorized exception. Here is the Binding var binding = new WSHttpBinding() { UseDefaultWebProxy = true, Security = { Mode = SecurityMode.Transport, Transport = { ClientCredentialType = HttpClientCredentialType.Basic, }, } }; Here is the service call var client = new InternetClient(binding, new EndpointAddress("httpsurl")); client.ClientCredentials.UserName.UserName = "username"; client.ClientCredentials.UserName.Password = "password"; client.ProcessMessage("somevalue"); When looked into Http headers using Http Analyzer CONNECT HEADER (Request-Line):CONNECT somehost.com:443 HTTP/1.1 Host:somehost.com Proxy-Connection:Keep-Alive POST HEADER (Request-Line):POST /Company/1.0 HTTP/1.1 Content-Type:application/soap+xml; charset=utf-8 VsDebuggerCausalityData:uIDPo+voStemjalOv5LtRotFQ7UAAAAAUKLJpa755k6oRwto14BnuE2PDtYKxr9LhfqXFSOo8pEACQAA Host:somehost.com Content-Length:898 Expect:100-continue Connection:Keep-Alive If you see the header Authorization header is missing Now my question is why WCF call missing the Authorization header? Am I missing something? . Please ask if you need more information

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