It could be 3rd party software issue, For troubleshooting, try clean boot
first. This how to may help
Windows general
How to run Windows OS with a clean boot · How to Run Windows Safe Mode
with Networking · How to setup DHCP for IP Phone · How to setup and use Wake
on LAN ...
http://www.howtonetworking.com/Windo...owsgeneral.htm
--
Bob Lin, Microsoft-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
"Cliffy55" <(E-Mail Removed)> wrote in message
news:5bb329a8-a406-4f28-af6b-(E-Mail Removed)...
>I have 4 computers on a home network--3 running XP, one on VISTA. The
> Router is a LinkSys wireless. The home network has been up and
> running for 6 years. However, recently the one computer that is
> ethernet wired to the router (running XP) will no longer allow access
> to the other computers. It can access the other computers shared
> folders, and the other computers can access each other. Internet
> access is not effected.
>
> I have insured the folder is set to share, and I have made no changes
> to the fire wall (using basic Windows Firewall)
>
> I had a similar problem with this same computer several years ago
> (the error code involved NT Rights) I used Windows Resource Tool Kit
> to successfully fix it. I tried to download the tool kit, but it will
> not install (a conflict with c:\Windows\system32\advpack.dll) . Any
> suggestions on how to fix this--or how to install Windows Resource
> Tool Kit?
>
> Thanks