No response to ping (w2k)

[Brian]

I am unable to ping a laptop (Windows 2000) on network (by
name or by IP) or map drives to it. Has Workstation
Service running. No Firewall on laptop running. If you
Ping by name, IP resolved but No Reply. I can reach other
machines and internet sites.

Here is what I have already tried:

Added entries in HOST and LMHOST (it doesn't have
resolution issues anyways).
Ran Spybot, checked for Firewall, removed everything extra
loading at Startup.

I also removed the TCP/IP protocol on my network
connection and re-added. I was able to ping the laptop and
make a connection until I rebooted. There has to be an
underlying OS issue somewhere but I can't seem to find it.
I thought IPSec might be an issue but I'm unfamiliar with
that. I verified the registry entry "EnableICMPRedirect"
set to "1". This issue came about just a few days ago.
The only software updated was Spybot S&D detection rules.

 

[Pegasus \(MVP\)]

I am unable to ping a laptop (Windows 2000) on network (by
name or by IP) or map drives to it. Has Workstation
Service running. No Firewall on laptop running. If you
Ping by name, IP resolved but No Reply. I can reach other
machines and internet sites.

Here is what I have already tried:

Added entries in HOST and LMHOST (it doesn't have
resolution issues anyways).
Ran Spybot, checked for Firewall, removed everything extra
loading at Startup.

I also removed the TCP/IP protocol on my network
connection and re-added. I was able to ping the laptop and
make a connection until I rebooted. There has to be an
underlying OS issue somewhere but I can't seem to find it.
I thought IPSec might be an issue but I'm unfamiliar with
that. I verified the registry entry "EnableICMPRedirect"
set to "1". This issue came about just a few days ago.
The only software updated was Spybot S&D detection rules.

If the name is resolved to an IP address but you are still
unable to ping then this is most likely a firewall issue. You
might have more than one firewall (been there, done that!),
or your firewall might only pretend that it is off. Uninstall
it to be sure!

You should also turn on the network status indicator on
each PC. It's a crude network traffic monitor: It shows
you whether packets are going out or coming in while
pinging.

Lastly, when responding, you should include the full
IP configuration details for each machine. The command

ipconfig /all

will provide them.