Network connectivity issues

[Zutu]

I am running a small (3 PC) W2K Pro home network through a Linksys router.This network has been up and running for more than a year with no issues. We are all running the latest service packs and updates.

We are in a workgroup no server. PC#1 cannot see anyone in 'My network places' however can ping by IP and by Netbios name computers #2 and #3. Also can connect to their printers and shares by \\computername\printer name etc.

Computers #2 and #3 can see all three PC's in 'My Network Places" however cannot access PC #1. They cannot ping it either but they can ping each other successfully and have access to each others shares and printers .

We can all access the internet no problem.

Have tried rebooting on numerous occasions. there is a 'userenv' error inEvent viewer regarding 'Windows cannot unload your registery file' on PC 1and yesterday there was an event error regarding "Master browser issues on
PC #2.

Have removed PC1 from the Workgroup, then back in, shut down and left it over night.
Have tried resetting the binding order.

Thanks for any help on this issue. :confused:

[Greenstead]

First guess would be a firewall somewhere.

Second would be a problem with the PC node types (check with ipconfig /all) - anything except 'peer-peer' is OK.