Question

I am getting an error when my application tries to communicate with a web service

(407) Proxy Authentication Required ( The ISA Server requires authorization to fulfill the request. Access to the Web Proxy filter is denied. )

I saw a few topics but I could not understand. I am using VB.net

Answer 1

Your app.config file should look like this:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <system.net>
    <defaultProxy useDefaultCredentials="true" />
  </system.net>
</configuration>

I think the error referring to TraceUtility is unrelated – different problem.