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Unable to access websites when using http

Posted on 2007-12-05
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Last Modified: 2013-11-30
I have a remote customer that I provide support to. They are having an error that makes no sense. I am able to connect via the internet using gotomypc. I am able to see them on Skype and have a chat session but they cannot go to any websites using either IE7 or Firefox. So if they type www.microsoft.com they are unable to view the site however if they type ftp.microsoft.com they are able to make a connection. Makes no sense to me so anyone able to shed some light on this it would be greatly appreciated.
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Question by:lesdow
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19 Comments
 
LVL 4

Expert Comment

by:BamBamHR
ID: 20416010

Sounds like they are having an issues with the HTTP Port. HTTP uses port 80, so try troubleshooting
there, on their PC, and any firewall or router they might use.

FTP, GoToMyPC and Skype all use different ports.
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LVL 1

Author Comment

by:lesdow
ID: 20416026
i have looked at the router for the internet and the http protocol is checked for outbound traffic. i have restarted the router and run through the setup wizard as well with no luck. i am able to ping websites and get a reply.
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LVL 18

Expert Comment

by:simsjrg
ID: 20416058
Download this and throw it on an FTP fo the client can access it. Have them pull it from the FTP and run it.

http://www.snapfiles.com/get/winsockxpfix.html
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LVL 77

Expert Comment

by:Rob Williams
ID: 20416065
Is it multiple PC's or one? Unlikely it would be multiple PC's but that is typical if you have Winsock corruption. If that is suspected try Microsoft's solution:
http://support.microsoft.com/kb/811259
Or a 3rd party tool:
http://www.snapfiles.com/get/winsockxpfix.html
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LVL 77

Expert Comment

by:Rob Williams
ID: 20416081
Sorry simsjrg, I didn't refresh before posting.
Another option is the lspfix.
http://www.snapfiles.com/get/lspfix.html
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LVL 18

Expert Comment

by:simsjrg
ID: 20416117
>> Sorry simsjrg, I didn't refresh before posting.

No problem it happens to me all the time :-)
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LVL 1

Author Comment

by:lesdow
ID: 20416229
it is multiple PC's. would this still point to a winsock corruption?
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LVL 77

Expert Comment

by:Rob Williams
ID: 20416240
It's very possible, but much like a virus not often does it affect multiple units. You could try one as a test machine.
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LVL 1

Author Comment

by:lesdow
ID: 20416273
i ran the netdiag /test:winsock /v test recommended by MS and the test passed.
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LVL 77

Expert Comment

by:Rob Williams
ID: 20416372
Mmmmm...
Because ftp.microsoft.com works I assume that it's not related to name resolution, but another thought is can you access a site by IP, such as Google:
http://64.233.187.99/
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LVL 1

Author Comment

by:lesdow
ID: 20417810
I cannot connect to websites using the ip address.
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LVL 77

Expert Comment

by:Rob Williams
ID: 20419882
-I assume there is no proxy server between the clients and the Internet?

-Also, I know you checked the router for protocols, but some also allow filtering of web content, using either allow only the following list, or block the following list. If the former was enabled by mistake with no sites added, all Internet http access would be blocked.
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LVL 1

Author Comment

by:lesdow
ID: 20422055
i checked that as suggested and all is open. i do not have a proxy on the network. Is there anything on the SBS that is applying a policy to stop HTTP. I have had a look and not seen anything obvious in the policies in Active Directory.
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LVL 77

Expert Comment

by:Rob Williams
ID: 20425266
Nothing in SBS default configuration that would block it, and there is not much that could be easily or accidentally enabled that would do so either.
There was a similar question here a while back where group policy was set somehow to enable "use a proxy server" for port 80 in Internet Explorer, but none configured. Easiest way to check would be go to a problematic PC and then; Internet Explorer | on the menu bar - tools | connections | LAN settings | check if use a proxy is enabled. As a rule every thing is empty on that page. The option to change will likely be grayed out as it is controlled by group policy, but you should be able to see the chosen options, if any.
0
 
LVL 1

Author Comment

by:lesdow
ID: 20440024
This call can be closed and no points awarded as the problem has been sorted out my the ISP. Thanks to those that tried to help.
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LVL 77

Expert Comment

by:Rob Williams
ID: 20441209
The ISP was blocking HTTP ?  Odd.

Glad to hear you have it sorted out.
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LVL 1

Author Comment

by:lesdow
ID: 20442011
I am not sure they were doing it purposely. They were very vague as to how they resolved it. However they did mention something about another gateway on the network. Not sure how this was the case as I certainly did not install another gateway on the network.

Thanks again for the help.
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