title: (407) Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. )
body: <p>I am getting an error when my application tries to communicate with a web service</p>
  
  <p>(407) Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied.  )</p>
  
  <p>I saw a few topics but I could not understand. I am using VB.net</p>