The remote server returned an error: (401) Unauthorized. at System.Net.HttpWebRequest.GetResponse() at _Default.btnsubmit_Click(Object sender, EventArgs e) in e:\WebSite1\Default.aspx.cs:

I am trying to run following code it works fine when runs on localhost IIS but returns error when hosted on my web server IIS

Error : -- The remote server returned an error: (401) Unauthorized. at System.Net.HttpWebRequest.GetResponse() at _Default.btnsubmit_Click(Object sender, EventArgs e) in e:\WebSite1\Default.aspx.cs:

try
       {

          var webAddr = "http://serviceserver/someService";
           var httpWebRequest = (HttpWebRequest)WebRequest.Create(webAddr);
           httpWebRequest.ContentType = "text/xml";
           httpWebRequest.ContentLength = 0;
           httpWebRequest.Method = "GET";
          
           httpWebRequest.Credentials = new NetworkCredential("user", "password");
           var httpResponse = (HttpWebResponse)httpWebRequest.GetResponse();
           using (var streamReader = new StreamReader(httpResponse.GetResponseStream()))
           {
               var result = streamReader.ReadToEnd();
               Label1.Text = result;
           }
       }
       catch (Exception ex)
       {
           Response.Write(ex.Message);
           Response.Write(ex.StackTrace);
           Response.Write(ex.InnerException);
       }