While troubleshooting a network timeout/connectivity WinHTTP issue, I temporarily added a host file entry for:
(The server has no internet connection and the firewall was causing some extended timeouts -- I wanted to temporarily set it to a local address for it to fail immediately).
For some reason though, even after flushing DNS cache, ping attempts still go to the actual IP.
This got me to thinking: Are there certain FQDNs which Windows 2008 absolutely will not acknowledge host file entries for? Perhaps for malware/virus protection?