Vista - Can't ping XP (even IP) but XP can ping Vista x64

Hi,

I'm completely lost now.

My network is standard DHCP 192.168.1.0 subnet 255.255.255.0 using a
router.

I'm running vista ultimate x64 and home premium x64 alongside XP pro 32
bit.

The 2 vista PCs can ping each other by name and ip address but can't
ping xp by name or ip. XP can ping itself and the 2 Vista PCs by name
and IP.

I've tried with both the Vista and XP firewalls disabled and enabled
with the required ICMP exceptions in different combination, e.g. both
of, xp off-Vista on, Vista off-XP on, both on.

This used to work but stopped in about the last 5-7 days or so. My mobo
on ultimate popped and then I swapped two vista name (about 2 weeks
ago).

Does anybody have any ideas?

Tx

George


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glaurens
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On Sat, 1 Aug 2009 01:02:52 +0530, glaurens
<glaurens.3w7g7c@xxxxxx> wrote:
Is there another firewall on the XP computer? Some antivirus programs
include a firewall component.

What does Windows Security Center say about firewalls?
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Best Wishes,
Steve Winograd, MS-MVP (Windows Desktop Experience)

Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com

Thanks all, I've managed to resolve it.

It was a Cisco VPN service that for some reason requires me to stop it
now before I can connect to my own network. Still don't know why it only
happened in the past week or so since the client was installed 11 months
ago.

G


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On Sat, 1 Aug 2009 15:21:37 +0530, glaurens
<glaurens.3w8j3a@xxxxxx> wrote:
Ah, yes, the Cisco VPN client software is notorious for causing LAN
problems. Thanks for letting us know the answer.
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Best Wishes,
Steve Winograd, MS-MVP (Windows Desktop Experience)

Microsoft Most Valuable Professional Program
http://mvp.support.microsoft.com