title: Exception in SharePoint 2010 when updating UserProfile using a web service
body: <p>I'm updating the UserProfile using the code below</p>
  
  <hr>
  
  <pre>
  
  using System;
  using System.Collections.Generic;
  using System.Text;
  
  namespace UserProfileWebServiceApp
  {
      class Program
      {
          public static localhost.UserProfileService myService =
              new localhost.UserProfileService();
          UserProfileWebService.localhost.PropertyData[] newdata = 
      new UserProfileWebService.localhost.PropertyData[1];
              newdata[0] = 
                  new UserProfileWebService.localhost.PropertyData();
              newdata[0].Name = "HomePhone";
              newdata[0].Values = new ValueData[1];
              newdata[0].Values[0] = new ValueData();
              newdata[0].Values[0].Value = "aa";
              newdata[0].IsValueChanged = true;
              myService.ModifyUserPropertyByAccountName("domainname\\username", 
                  newdata);
  
      }
  }
  
  an soap exception occur --> Attempted to perform an unauthorized operation.
  anyone help me
  thanks
  </pre>