Cannot Access Computers on Home Network

[Doug H]

I have 3 computers all running XP Home SP3. I recently changed from a router
that supported ethernet and phone wire connectivity to a wireless router.
All three could share folders and printers previously via Windows home
network. Since changing to the wireless router (netgear wnr2000) none of the
computers can connect. The IP addresses are all in the range 192.168.x.y
where x is the same for all three and y is in the range of 1 - 10. All have
the same subnet mask and default gateway id's. Attempts to ping one another
all fail, pinging each local machine is successful. The cable modem is
connected to the router via ethernet. All three computers can access the
internet through the router.

I've tried everything I know to fix this problem including running the
network setup wizard using different workgroup names. I also tried using the
wireless network SSID as the workgroup name. No luck! Any help would be
appreciated.

 

[Jack \(MVP-Networking\).]

Hi
Leave the Wireless settings alone if all computers can access the Internet.
If the subnet of the new Router is Not the same as the previous one the
Firewall probably blocks the LAN traffic.
I.e., it use to be 192..168.xxx.xxx, and now it is 192.168.NNN.XXX
Firewall trusted Zone need to be adjusted.
Jack (MS, MVP-Networking)

 

[smlunatick]

I have 3 computers all running XP Home SP3.  I recently changed from a router
that supported ethernet and phone wire connectivity to a wireless router. 
All three could share folders and printers previously via  Windows home
network.  Since changing to the wireless router (netgear wnr2000) none of the
computers can connect. The IP addresses are all in the range 192.168.x.y
where x is the same for all three and y is in the range of 1 - 10.  Allhave
the same subnet mask and default gateway id's.  Attempts to ping one another
all fail, pinging each local machine is successful.  The cable modem is
connected to the router via ethernet.  All three computers can access the
internet through the router.

I've tried everything I know to fix this problem including running the
network setup wizard using different workgroup names.  I also tried using the
wireless network SSID as the workgroup name.  No luck!  Any help would be
appreciated.

What is the anti-virus software or Internet security software? I
encountered this last year (2008) which I switched my own router.
Turned out my Norton 360 must be told to trust the new LAN IP subnet
(192.168.0.xxx) and the wireless SSID.

Also, several anti-virus software can offer an Internet worm virus
blocking feature. This usually blocks the ping by name (ping \\PC1)
but should let the ping by ip address through (ping \\192.168.0.1.)

 

[Doug H]

All 3 computers are running McAfee Security Center provided by Comcast. I
changed settings under Managed Networks that have made it possible to
successfully ping using the IP addresses. However, I cannot ping using the
computer name.

When I go to Network Places I see each computer. If I try to access other
than the local machine I get an error message that "\\Computer Name is not
accessible. You might not have permission to use the network resource. The
network path was not found". I'm not sure if the problem is due to Windows
or a McAfee setting.

Thanks for the help so far. If you have further ideas I would appreciate
the help.

 

[Doug H]

Your suggestion to check security software pointed me in the right direction.
I turned off the firewall in McAfee Security Suite and verified that Windows
Firewall was On. As soon as I did this on all computers the network
connections worked.

Thanks for you help

 

[smlunatick]

Your suggestion to check security software pointed me in the right direction.
 I turned off the firewall in McAfee Security Suite and verified that Windows
Firewall was On.  As soon as I did this on all computers the network
connections worked.  

Thanks for you help

I have encounter both McAfee and Norton as the anti-virus / security
system that cause the most problems.