title: WPAD queries calling webservice from ASP.NET
body: <p>We have an ASP.NET website which calls a webservice.   If impersonation is not on for the ASP.NET website the call to the webservice is slow - using WireShark we see that it is making WPAD queries.</p>
  
  <p>If impersonation is on and it's impersonating an admin user the call to the webservice is fast - using WireShark we that it is NOT making WPAD queries.</p>
  
  <p>Has anyone seen this before? How do we prevent the NetworkService, which by default is what the ASP.NET website uses, does not make WPAD queries. </p>
  
  <p>Why does impersonating as an admin user not cause WPAD queries?</p>
  
  <p>This is the entry we see in WireShark:</p>
  
  <p>NBNS Name Query NB WPAD&lt;00></p>