For troubleshooting, try to boot to safe mode with network. Can you ping
How to Run Windows safe Mode with Networking
3. Choose the Safe Mode with Networking, and press Enter. 4. Confirm
whether the problem also happened in Safe Mode. Post your questions,
Bob Lin, MS-MVP, MCSE & CNE
Networking, Internet, Routing, VPN Troubleshooting on
How to Setup Windows, Network, VPN & Remote Access on
"Mike" <Mike@discussions.microsoft.com> wrote in message
> Old, established, stable, working network of 2 Vista (32) and 2 XP home.
> Two Vista computers can connect to each other and to two XP computers.
> two XP computers cannot connect to either Vista computer or each other.
> four can connect to internet (not router). Heard rumor that Vista
> update last week caused problem.