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Invisible network PC

Last response: in Networking
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January 10, 2012 10:31:59 AM

I'm trying to set up a very simple network, with two desktop PC's and a laptop connected via a Netgear wireless router. I've managed to get almost everything working, but the last piece of the puzzle is defeating me! That is, no matter what I do one of the desktop PC's remains 'invisible'.
Briefly, the two desktop PC connect with ethernet cables via the router; the laptop connects via wifi to the router. All connect to the internet via the router (and a cable modem). There is one printer which is attached to the 'invisible' desktop PC via USB. All the computers run Win XP.
Strangely, I can print from the laptop, indicating that the otherwise 'invisible' PC is accessible via the network.
One difference that may be significant is that the invisible PC was, and still is, connected to the internet via Virgin Media ISP and has already installed firewalls and anti-virus from Trend Micro; on the other two I use AVG.
I've looked at the Microsoft help website, which wasn't very helpful; I've tried turning off the firewalls, and some similar suggestions from MS, but all to no avail.
Perhaps some networking guru can point me in the right direction? If I've left out some vital bit of info then my apologies, but it's difficult to know what is crucially relevant.
Thanks.

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January 10, 2012 12:44:11 PM

Hi,
Thanks for the quick response.
Yup, I used the default names - MSHOME, WORKGROUP etc. What really puzzles me is how the laptop can see the printer, and its path, but not the PC to which it is attached? I'm not sure about network discovery; where is it enabled? I'd assume its the default condition - perhaps you can shed some light there?

Regards,
Mike.
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January 10, 2012 2:06:59 PM

The two links in my last post are in regards to network discovery. Maybe you didn't read far enough. This may be a vista/7 feature only as I can't find network discovery on my xp machine so file and print sharing may be all you need on xp.

If you list your OS's, it may help.

This link may help also.

http://www.tomshardware.com/forum/13925-63-enabling-fil...
January 10, 2012 3:23:23 PM

Yes, I think it must be a Win7 feature as I cannot find any reference to network discovery in WinXP - which is what all the pc's are running - but I guess slightly different versions or releases. For instance, the laptop has 'Connect To' in the Start menu, which the other two do not. I've looked at the firewall configurations and made sure that TCP and UDP ports are allowed, at their default values and UPnP is ticked.
However, my most recent success has been to map a network drive, and this has allowed a connection to the hitherto invisible PC.... I shall leave it at that for the present as I can now transfer files to a backup disk.
Thanks for your time trouble.
Mike
!