ISA Server uses the Web Proxy Automatic Discovery (WPAD) protocol, which allows automatic discovery of Web Proxy servers. Most of the time, it works fine, but sometimes something goes wrong. Here’s a great blog post on how to troubleshoot WPAD issues.
Check it out at http://blogs.technet.com/b/sooraj-sec/archive/2011/07/07/wpad-is-working-or-not.aspx
Deb
DEBRA LITTLEJOHN SHINDER
MVP (Enterprise Security)
“MS SECURITY”
[email protected]