[timbou]

Im operating a computer classroom. We have 3 classrooms and 20 PCs in each of them. They are being updated now to SP3. Almost everything worked out fine...but 5 computers have now problem connecting to the internet. LAN is working perfectly... I can connect to the others computers in the classroom and to different network places but not to the internet... I have treid uninstalling SP3... uninstalling the LAN card and reinstalling it...checked the network parameters...almost everything... any suggestions?

[Fordy]

Have you tried latest drivers?

SP3 may be fussy and need newer versions.

[thingie2]

Have you checked all the Internet settings (Ip addresses proxy servers, DNS servers etc) are all still correct?

[serverguy]

Go to one of the dodgey pcs (or a couple of them).

Go to Start - Run

Type in CMD

The in the Command Prompt type in IPCONFIG /ALL

Then right click and click Select All.

Then press Enter.

That will copy everything to the clipboard, then paste it into this thread.

Do these PCs get IPs etc from a DHCP server?



After doing that, there are a couple of patches you can try applying.

Try this one first

Then this one if needed

[timbou]

Okei...I solved the problem accidently :D
Anyway... the problem was that after installing SP3 somehow Fsecure (Antivirus that we use) blocked some applications and also SOME specific network connections :S I dont know why and how but it affected IE, Firefox and netscape navigator (the browsers we have installed) ONLY. And this only on 5 computers. On the other computers SP3 caused no problems. And usually Fsecure asks if some application or connection is suspicious when you start it but this time not...

But anyway... thanks everyone for the help! :)

[Fordy]

Glad you sorted it

[serverguy]

Glad you got it sorted. There is a known problem with SP3 interfering with third part firewalls.. I think one of my links linked to it.

[thingie2]

Glad you got it working, I'll remember about this for other people's problems