Good Morning

I have a laptop running on our corporate network. For some unknown reason it
is not possible to ping this laptop. I have started it in safe mode with
networking and suddenly its pingable. I have re-installed the network
drivers, disabled many services & drivers using msconfig but still cant pin
point the problem. I have also tried it on another network port and IP adress
to no avail. Windows firewall is disabled (it was on SP1 when i first looked
at the issue) and I have already re-installed the network card. If i put a
new disk with a basic image into the laptop it works fine which rules out
hardware / xp compatibillity issues, network issues. I am sure a rebuild will
fix it but this laptop is going to be a pain to rebuild....any ideas??  The
way that it works fine under safe mode is really bugging me! arrrrrgh!

Many Thanks

If you turn off the firewall and you can ping when using safe mode, make sure no other security software running.

Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on http://www.ChicagoTech.net
How to Setup Windows, Network, VPN & Remote Access on http://www.HowToNetworking.com
  Good Morning

  I have a laptop running on our corporate network. For some unknown reason it
  is not possible to ping this laptop. I have started it in safe mode with
  networking and suddenly its pingable. I have re-installed the network
  drivers, disabled many services & drivers using msconfig but still cant pin
  point the problem. I have also tried it on another network port and IP adress
  to no avail. Windows firewall is disabled (it was on SP1 when i first looked
  at the issue) and I have already re-installed the network card. If i put a
  new disk with a basic image into the laptop it works fine which rules out
  hardware / xp compatibillity issues, network issues. I am sure a rebuild will
  fix it but this laptop is going to be a pain to rebuild....any ideas??  The
  way that it works fine under safe mode is really bugging me! arrrrrgh!

  Many Thanks

First guess would be third party firewall or firewall-like security software
which does not run in safe mode.

Doug Sherman
MCSE, MCSA, MCP+I, MVP

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