One computer in peer to peer no longer seeing other computers or being seen

[Guest Jack B. Pollack]

I set up a friends peer-to-peer network a few years ago. everything has been

working well until recently (an he claims nothing has changed on any

machines, ha!).

 

All 4 computers are WinXP SP2. Every computer is seeing all the other

computers on the network shared folders & printers. Recently the laptop does

not see the other computers and the other computers "see" the laptop but

can't connect to it.

 

The laptop does still connect to the internet

The laptop can ping the other computers successfully

All computers are part of the same workgroup and on the same subnet

No viruses or spyware detected on any systems

AV and (Windows) firewall have been disabled for testing purposes

No other 3rd party firewalls are installed

File & Printer sharing is enabled on all computers

 

I do see the laptop listed in the other computers Network Neighborhoods, but

get the following message when trying to connect "\\Laptop is not

accessible. You might not have permission to use this network resource.

Contact the administrator of this server to find out if you have access

permission. The network path was not found"

 

No computers are listed in the network neighborhood of the laptop (including

the laptop). If I try to search for a computer nothing is found. If I try to

connect to a previously mapped network drive I get the above error message.

 

Any ideas?

 

Thanks