Cannot expand network....

[Frank]

6 computers in a network.... XP/2000/98 systems, been running fine for
over a year... no problems.

Added 2 new systems, one XP Home SP2 and one XP Pro SP2.
These two new computers "see" each other fine.
Neither can see the original 6 computers NOR can any of the original 6
see the two new ones.
Workgroups are all the same for all 8.

Ideas ?
Regards,
Frank

 

[Richard G. Harper]

Network topology? What connects the PCs to each other? To the Internet?

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[Frank]

Network topology? What connects the PCs to each other? To the Internet?

All PC's are connected to a 20 port switch.
Switch to the Router - all Internet connections work fine.

Plus, I forgot this earlier...
If I PING a specific IP Address of one of the "invisible computers" I
get a valid Response.

Question the early 6 computers - wasn't Workgroup name CASE Sensitive at
that time? Maybe that I only think that the Workgroup name is "ADMIN"
on all systems. Just thinking out loud.

 

[Richard G. Harper]

Do the two new computers have any firewall software installed? If so, does
disabling it (if it's the Windows XP firewall) or uninstalling it (most
third-party firewalls do NOT disable correctly, but must be uninstalled)
solve the problem?

--
Richard G. Harper [MVP Shell/User] (e-mail address removed)
* PLEASE post all messages and replies in the newsgroups
* for the benefit of all. Private mail is usually not replied to.
* My website, such as it is ... http://rgharper.mvps.org/
* HELP us help YOU ... http://www.dts-l.org/goodpost.htm

 

[Frank]

Do the two new computers have any firewall software installed? If so, does
disabling it (if it's the Windows XP firewall) or uninstalling it (most
third-party firewalls do NOT disable correctly, but must be uninstalled)
solve the problem?

Firewalls turned off when there was no "connection"
When off, no change, non of the original 6 showed up as members of the
workgroup.

 

[Richard G. Harper]

Have we checked the new PCs to make sure they have IP addresses in the same
range as the existing PCs? How about comparing IPCONFIG /ALL output between
a working PC and a non-working PC?

--
Richard G. Harper [MVP Shell/User] (e-mail address removed)
* PLEASE post all messages and replies in the newsgroups
* for the benefit of all. Private mail is usually not replied to.
* My website, such as it is ... http://rgharper.mvps.org/
* HELP us help YOU ... http://www.dts-l.org/goodpost.htm

 

[Frank]

Have we checked the new PCs to make sure they have IP addresses in the same
range as the existing PCs? How about comparing IPCONFIG /ALL output between
a working PC and a non-working PC?

Remember, I can Ping each computer and get a valid response.
So, to me "everybody" is on the network....
So why does Windows not see them?

 

[Richard G. Harper]

Being able to ping is important but is not the crux of the question. On my
work network I can ping servers in the Downtown network via WAN that I can't
see when browsing the network.

--
Richard G. Harper [MVP Shell/User] (e-mail address removed)
* PLEASE post all messages and replies in the newsgroups
* for the benefit of all. Private mail is usually not replied to.
* My website, such as it is ... http://rgharper.mvps.org/
* HELP us help YOU ... http://www.dts-l.org/goodpost.htm