what would cause ICMPsendEcho to fail when ping.exe succeeds

Question

I have an interesting situation on my hands, and I\'m not quite sure how to go about troubleshooting it. I did a few searches for something similar to my situation, but nothing

Answer 1

Have you checked the user permissions? Ping.exe does not require administrator rights, but the raw ICMP commands in Windows need administrator privileges.

See this example: http://www.delphi-central.com/tutorials/icmp-ping.aspx

Please note, however, that for Windows NT and Windows 2000 implementations, Raw Sockets are subject to security checks and are accessible only to members of the administrator's group.

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Another possible reason could be a firewall which blocks ICMP packets.