Wireless connection but can't connect to internet

Tech, TV, Mobile, Internet and Geek Corner
1
Help please!

We have wireless internet through swisscom and currently have two laptops that are connecting fine to the internet. The problem is with the laptop my daughter uses (an older Dell model). It worked fine in the states (connected wirelessly through a D-link router), but is not able to connect to the internet here. It shows a strong internet connection, but when I try to open a web browser (Internet explorer), I get an error message. When I try and diagnose the problem, I get the error message "Windows cannot connect to the Internet using HTTP, HTTPS, or FTP. This is probably caused by firewall settings on this computer. Check the firewall settings for the HTTP port (80), HTTPS port (443) and FTP port (21)." I have tried re-setting all of the Firewall settings to the default values as well as opening the ports manually. This doesn't seem to be working. If anyone can offer advice on how to fix, I would really appreciate it. Thanks!

2
Does that affected laptop work if the firewall is disabled ?

Are there multiple firewalls installed ?

3
Can you ping for example google.ch?

Reset the settings of your browser in case you have used a proxy here is a LINK

If Norton Anti-Virus's data is too far out of date, or if your subscription has expired, it may shut stuff down. Symantic's Norton Removal Tool works very well.

Hope it helps. Cheers.

4
You have the network name ("SSID") and the network password ("WPA key") correctly set on your daughter's laptop...?

See the following Swisscom installation guide: http://www.swisscom.ch/res/hilfe/int...uell/index.htm

If you still can't get it to connect call Swisscom, they do speak English. 0800 800 800

5
To be clear, are you able to ping / login to your router from the problem machine?

You say that you have a strong wifi connection so the follow seems irrelevant. Nevertheless ....

The US disallows a few channels that the rest of the world permits. See the table here:

http://en.wikipedia.org/wiki/List_of_WLAN_channels

If your network is using one of these channels then your US configured laptop may not be able to connect. (I have experienced this, but don't remember the detailed symptoms).

6
Thank you for the suggestions. I do have the SSID and WPA keys set correctly. The internet connection icon shows that it is a strong connection, but I'm unable to get on the internet. I can ping the router, but no webpages. I reset the browser settings as suggested by nikolay but without success. I don't think it is a problem with Swisscom, rather with the computers settings, but am unsure. I have tried to connect with the Firewall disabled and this did not work either. Thank you for your suggestions, I'll keep looking and trying different things.

7
This happened with a friends laptop at our place and we already had multiple laptops/smartphones connected no problem. Turned out our router had a limited number of devices that were allowed to connect at a time. We had to connect to the router and change this to a higher number and that fixed it.

Sorry if it is something more technical...can't help you out there.

8
Set DNS manually to OpenDNS: server1 208.67.222.222 and server2 208.67.220.220, then ping ibm.com

9
No MAC filtering on Wi-fi router?

check Channels setting on Wifi router: in Europe 12 13 is allowed whereas forbidden in the US.

10
goto a command prompt and make sure you have been assigned an IP address from the router and that the defaultgateway and DNS etc is setup correctly.

Start/run/cmd

ipconfig /all

Look for IP, subnet, Def Gateway, DNS servers (they should all be assigned by the router assuming you are using DHCP)

From there, try a ping of the def gateway IP if it is assigned.

Also, try connecting via an ethernet cable which will take the wireless config out of the equation and will at least ensure the laptop can connect that way.

Cheers

Sean

11
I assume if they can ping the router, then they are connecting to the router so MAC filtering etc.. not an issue.

Can you run the router admin tool from that laptop? Normally you just need to put in the IP address of the router like: 192.168.1.1 into a browser window.

Then you'll need to have the login ID and password.

12
I am having the exact same problem on my laptop, but only when trying to connect to unsecure wireless. At my home when connected it works just fine. The same laptop used to connect to any wireless and according to the wireless icon it still is connected its when i open an internet browser that it says there is an error. If you resolve the issue please do share how!

13
Check your webbrowser if it's configured to auto-detect proxy settings under (in IE): Tools->Connections->LAN Settings (in FireFox): Tools-> Advanced->Network->Settings

14
I can get to the router diagnostic tool by entering the router address in a browser window. It shows the laptop in its list of LAN devices that are connected. However, I still can't get to any other websites. What am I missing????

15
Problem has been solved! Thanks everyone. After nearly going insane, I found a post that suggested that IPv6 could be the problem. After deleting this I'm able to browse the internet again. Here is how to uninstall:

To remove ipv6 in Windows XP with SP2, Windows XP with SP1, or Windows Server 2003 go to Control Panel -> Network Connections then double click the network card / adaptor you’re using. Under “This connection uses the following items” section you should see “Microsoft IPv6 Developer Edition” or “Microsoft TCP/IP version 6′′. Select it and click uninstall.

16
Don't think the world is ready for IPV6 yet. All network devices bought today should support this, but I don't know when this will be useable. For this to be enabled, I am not sure how much of the infrastructure has to support this.

i.e. would it be enough for the local exchange to support this and then NAT to IPV4 networks or will we need everywhere to support this?

In theory this would enable every network device to have it's own unique IP address.

17
Thanks a lot for the solution.... this worked for me as well.

18
A new internet access problem seems to have arisen for Bluewin customers of their ADSL/VDSL service since early this afternoon. As far as I can see, it is affecting customers all over Switzerland. Not that you would know anything from the Swisscom or Bluewin sites, and the hotline had still had managed to answer my call after 25 minutes of musak...

Anyway, according to a German-language forum (which I finally managed to find on my mobile), the solution is to change the internet DNS setting to the Google address of 8.8.8.8. I've done it, which is why I can now complain about Swisscom's poor customer service. I've wasted hours and hours this afternoon trying to fix what I thought was a problem with my own system.

Apparently, this also happened last January with a similar lack of information from Swisscom. I'm not impressed.

19
Indeed:

http://twitter.com/search?q=swisscom

I don't believe that they don't know the reason for the problem.

That is a lame excuse.

20
I'm going to change my default DNS to OpenDNS from now on