Blocked internet connection

[liloe]

Again I have a strange case of computer stuff

Basically a student came to me cause she had a broken McAffee and a broken F-Secure (both the internet security suit) on her Notebook. I uninstalled both, using the McAffee uninstaller (official tool) and F-Secure using the Revo uninstaller.

Now the funny part is, that after the uninstall of both programs the access to the internet is totally blocked. Seeing that I can ping the Gateway, it's nothing with the connection. The windows clock also sets its time automatically, so I presume it's just some DNS stuff happening. I checked the DNS and it can be pinged and it's the correct one for university.

So I remember that there was a routes file on older Windows systems, but I'm pretty much stuck on that issue now I haven't tried deactivating the Windows firewall, yet, but I doubt it has to do with that.

I'm glad for any suggestions regarding that thing. I know I had that before with an unclean Norton Internet Security deinstallation, but that was fixed by using the official Norton.

 

[inactionman]

May be some malware. Try malwarebytes.

Else you may be looking at a complete reinstall. What happens with a traceroute?

 

[Insane]

and F-Secure using the Revo uninstaller.

Thats where you probably cocked up their machine, by not using the proper uninstall application for F-Secure.

F-Secure installs itself under multiple entries, and you need to remove all other entries before uninstalling the F-Secure Anti-Virus application.

To Fix? Easiest way would be to install the trial version of F-Secure Internet Security 2010 over the top of everything and then uninstall using the add/remove programs

It should fix the laptop, if not well Revo can mark that machine up as another casualty.

 

[liloe]

Thats where you probably cocked up their machine, by not using the proper uninstall application for F-Secure.

F-Secure installs itself under multiple entries, and you need to remove all other entries before uninstalling the F-Secure Anti-Virus application.

To Fix? Easiest way would be to install the trial version of F-Secure Internet Security 2010 over the top of everything and then uninstall using the add/remove programs

It should fix the laptop, if not well Revo can mark that machine up as another casualty.

Well there was only one instance of F-Secure left and it already seemed quite cocked up ^^ The problem is that I only get the computers once everything is really fucked up :<

Thought about reinstalling F-Secure completely as well, so that's gonna be it for a start, tbh.

Have you had bad experiences with Revo already?

 

[Zenith.UK]

Tried the following in a CMD box?

ipconfig /flushdns

Also check the HOSTS file...

notepad %systemroot%\system32\drivers\etc\HOSTS

See if there are any entries that shouldn't be there. It's supposed to be used for resolving local network addresses but if there's any doubt about the contents, you can use this MS page to reset it back to default.
How do I reset the hosts file back to the default?

 

[Killswitch]

I suppose the way I'd approach it would be;

1) Can you ping the gateway
2) Can you ping past the gateway (try 195.92.195.92)
3) Can you resolve DNS (host Google)

It could be something simple like there's no default route set. You'd still be able to hit the gateway and other stuff on the same subnet, but nothing past the gateway. Have a look at the output of 'route print' on the command line and look for a route to '0.0.0.0'.

It might be worth checking the Windows Firewall...just to be on the safe side. This could be worth a try too;

http://help.aol.com/help/microsites/microsite.do?cmd=displayKCPopup&docType=kc&externalId=223839

Erm...past that, if you post the output of the following commands;

ipconfig /all
route print
host Google
ping 195.92.195.92
tracert 195.92.195.92

I might be able to think of summat else

Disclosure: I work Senior Tech Support for an anti-virus software firm

 

[liloe]

I did the ping gateway part and it worked. Then I shut down the Windows Firewall, but no change.

The DNS-idea is really a good thing, rep for that.

In the end I tried the simplest idea first. I found some F-Secure installer on the internet, but first I didn't want to try it cause it wasn't from their official page. Well so after some checking around I trusted the download site and used the tool. It did some stuff and it must have removed that one little setting that blocked everything and now everything works like a charm. A restart later and then an avast! installation and the job was done.

Still pisses me off how badly some uninstallers are programmed. Killswitch, I hope it's neither Norton, nor McAffee, Antivir or F-Secure
But no matter what, rep for you as well and a big thanks to all posters =) Made me find a lot of interesting things.

 

[Scouse]

In 15 years as a professional IT-contractor type I've never had to use an "uninstaller".

I suggest reliance on an uninstaller, rather than uninstalling programs the way they've always been installed on a windows box, may be part of your problems

Disclosure: I work Senior Tech Support for an anti-virus software firm

Not Norton eh? Lad I work with wrote a hard uninstall job that Norton eventrually published because, despite support from Norton, the company I was working for couldn't cleanly uninstall Norton's (older) product from 20,000 desktops!

 

[MYstIC G]

Reinstall F-Secure and uninstall it. Check there Knowledgebase to see if there is a complete removal tool. I say this because Norton did this to a laptop once and obviously does it regularly as Symantec have a removal tool.

 

[ST^]

In 15 years as a professional IT-contractor type I've never had to use an "uninstaller".

I suggest reliance on an uninstaller, rather than uninstalling programs the way they've always been installed on a windows box, may be part of your problems

Indeed. I had to do a double-take because I couldn't understand why such an app would exist or why someone would actually use it.

 

[MYstIC G]

Revo is actually quite handy for cleaning out dross uninstallers miss. It's more like Cleansweep in my experience.