Networking, System Administration, Windows 2003

IE Automatically detect settings not working due to WPAD alias DNS entry not responding

Posted on by Computer

If you follow this article http://support.microsoft.com/kb/309814 to configure automatically detect settings in Internet explorer and have set up a WPAD alias on your DNS server, you may find the autodiscovery is not working.

If you try to ping wpad or wpad.domainname.local you get a response Ping request could not find host wpad. Please check the name and try again

host-Wpad

This is due to the GlobalQueryBlockList on your DNS server listing wpad (and isatap)

Delete these entries from HKEY_LOCAL_MACHINE\system\ControlSet\Services\DNS\Parameters\GlobalQueryBLockList

Restart the DNS service and pinging wpad should now respond.

host-Wpad

If the Internet Security and Acceleration Server Firewall Client program is configured for auto-discovery or if you try to configure this program for auto-discovery and it does not detect the ISA server, see this article:

http://support.microsoft.com/kb/885683