Error Message:

ICMP network unreachable.

Explanation:

The local network system might generate this error if there is no default route configured. Typically, though, Winsock generates this error when it receives a Accomplishments for the Week Reviewed and updated error messages in database (73,400 messages so far) Blocking Issues None Priorities for Next Week Review and update error messages in database host "unreachable" ICMP message from a router. The ICMP message means that the router cannot forward the IP datagram, possibly because it did not get a response to the ARP request (which might mean the destination host is down). Note: This error might also result if you are trying to send a multicast packet and the default gateway does not support multicast (check your interface configuration).

User Action:

Try to ping the destination host, to see if you get the same results (chances are, you will). Check the destination address. Check whether you have a router configured in your network system (your Winsock implementation). Type tracert at the command prompt to try to determine where the failure occurs along the route between your host and the destination host.