Sometimes, XP's built-in Firewall may enable after running network setup
wizard on LAN connections. You can't ping or access the XP computer. To
disable the XP firewall on the connection, go to the properties of the
Connections, select Advanced, and deselect the firewall.
outside IP or name
If you can't ping outside IP, make sure you have correct gateway. If you
can't ping outside computer name or web name, check the DNS settings.
If you cannot use ping successfully at any point, confirm that:
1)The computer was restarted after TCP/IP was configured.
2) The IP address of the local computer is valid and appears correctly on
3) IP routing is enabled and the link between routers is operational.
4) For the security reasons, many organizations block the return of ICMP
(ping) packets so that ping or tracert may not be possible to obtain a
Error code 65, 10043 and
10050, transmit failed
Symptoms: When using ping command, you may
receive either of the following: "Transmit failed, error code 65" or "Transmit
failed, error code 10050"
Resolutions: make sure your firewall, NAT or
router doesn't disable ping and to allow ICMP Echo and Echo Reply packets.
Symptom: when you try to ping an IP, you may receive "hardware error" reply.
Causes: 1. Bad NIC.
2. The cable doesn't plug in.
Host is unreachable
Q: When I ping the server using one of the clients it says the host is
A: 1) Make sure all machines are on the same local subnet and no routers in
2) Check the lmhosts file to make sure that you do not have an outdated file.
Ping lists a public IP
instead of private IP
Symptom: when you ping a LAN computer like ping chicagotechpc1, you may
receive a public ip 188.8.131.52 instead of the computer private IP
Cause: Incorrect DNS settings. Also please refer to this link:
Receiving a reply from a different IP
Symptoms: when you ping a public IP, you may
receive reply from a different IP, for example,
Pinging 184.108.40.206 with 32 bytes of data:
Reply from 220.127.116.11: Destination net unreachable.
Causes: If you have incorrect IPSec settings,
you may have above mentioned symptom.