Cannot browse or email

[Guest]

Hi

I'm tearing my hair out with this one and desperately trying to avoid a
reinstallation of windows.any help much appreciated

I look after a small network of 6 office computers all of which are
networked together fine and access the internet through a router.

One computer though will not browse the internet either using internet
explorer or firefox.
Neither can it access our email server usiing thunderbird or outlook
express. This is a fairly recent development and has in the past worked okay.
All other computers on the network work fine.

I receive "cannot connect to www.xxxx.xxx" and "server not found" messages
etc when trying to browse depending on browser. Email connection atempts also
result in "server not found" messages. I cannot browse either using IP
addresses ie http://66.102.11.99. All IE connection settings look okay.

I can via a command line ping all other computers on the network including
the router and ping any web address via either its DNS reference or IP
address eg. www.google.com or http://66.102.11.99. I receive replies okay
with no packet loss at all.

I can sign in to MSN messenger, Yahoo messenger etc okay.

So far I have done the following
1. Virus, ad-aware, and spyware scans as well as I can remembering that I
cannot update definitions etc due to the connection problem
2. Ran hijack this and found nothing untoward running in the background
3. Applied Winsock and LSP fixes downloaded from various links found on
this site.
4. Manually deleted "HKLM\System\CurrentControlSet\Services\Winsock" &
"HKLM\System\CurrentControlSet\Services\Winsock2" and imported fresh
keys that I've downloaded (via another computer on the network
obviously)
5. ran netsh from a command line as follows
i) netsh winsock reset c:\winsockresetlog.txt
ii) netsh int ip reset c:\intresetlog.txt

In between all of the above I have rebooted and tried to web browse and
receive emails all with the same result.

IPCONFIG /all shows that the computer is being allocated an IP address via
the router DHCP on the network and the correct gateway address (ie the
router) and DNS server shown also as the router.

Am I really looking at a reinstallation of windows? I'd prefer not to do
that as the computer in question is the main file server for industry
specialist software that the company uses. This problem as I have said
appeared almost overnight and not following any software installation. Any
help very much appreciated.

thanks


a very desperate

FBB
Remeber kids, don't try this at home

 

[Guest]

Have you tried giving it a static IP (set DNS and WINS setting manually as
well) and seeing if it works? Disabled Windows Firewall? Is it possible to
plug this into a different network jack to see if it has something to do with
it? Different cable? Reboot the firewall (I've seen this work a few times
for many different scenerios).

Hope one of these helps.

-storlogic

 

[Guest]

Hi

Thanks for the quick reply. I have tried all of the suggestions except the
static IP which I'll try as soon as I get back to work tomorrow.

I should have mentioned that I'd also checked cables, connection point,
rebooted the router and also disabled the firewall

Thanks once again

 

[Doug Sherman [MVP]]

Since you can ping/route to external IPs and resolve external names, the
problem is most likely browser settings or security/proxy software.

Doug Sherman
MCSE, MCSA, MCP+I, MVP

 

[Guest]

--
FBB
Remember kids, don''t try this at home

Hi

I'm tearing my hair out with this one and desperately trying to avoid a
reinstallation of windows.any help much appreciated

I look after a small network of 6 office computers all of which are
networked together fine and access the internet through a router.

One computer though will not browse the internet either using internet
explorer or firefox.
Neither can it access our email server usiing thunderbird or outlook
express. This is a fairly recent development and has in the past worked okay.
All other computers on the network work fine.

I receive "cannot connect to www.xxxx.xxx" and "server not found" messages
etc when trying to browse depending on browser. Email connection atempts also
result in "server not found" messages. I cannot browse either using IP
addresses ie http://66.102.11.99. All IE connection settings look okay.

I can via a command line ping all other computers on the network including
the router and ping any web address via either its DNS reference or IP
address eg. www.google.com or http://66.102.11.99. I receive replies okay
with no packet loss at all.

I can sign in to MSN messenger, Yahoo messenger etc okay.

So far I have done the following
1. Virus, ad-aware, and spyware scans as well as I can remembering that I
cannot update definitions etc due to the connection problem
2. Ran hijack this and found nothing untoward running in the background
3. Applied Winsock and LSP fixes downloaded from various links found on
this site.
4. Manually deleted "HKLM\System\CurrentControlSet\Services\Winsock" &
"HKLM\System\CurrentControlSet\Services\Winsock2" and imported fresh
keys that I've downloaded (via another computer on the network
obviously)
5. ran netsh from a command line as follows
i) netsh winsock reset c:\winsockresetlog.txt
ii) netsh int ip reset c:\intresetlog.txt

In between all of the above I have rebooted and tried to web browse and
receive emails all with the same result.

IPCONFIG /all shows that the computer is being allocated an IP address via
the router DHCP on the network and the correct gateway address (ie the
router) and DNS server shown also as the router.

Am I really looking at a reinstallation of windows? I'd prefer not to do
that as the computer in question is the main file server for industry
specialist software that the company uses. This problem as I have said
appeared almost overnight and not following any software installation. Any
help very much appreciated.

thanks


a very desperate

FBB
Remeber kids, don't try this at home

Okay since my last post I have done the following

1. Uninstalled IE7 and hey presto IE6 now works fine.
2. Uninstalled and reinstalled both firefox & thinderbird. Neither of which
connect.

Firefox just comes back server not found, Thunderbird says it gets no reply
from our mail server though I suspect it can't find it.

None of the update programs work either. AVG cannot update because it cannot
find the server and neither can Windows defender. I can browse to them using
IE6 though.

Any ideas anybody? please? pretty please ;-)