All browsers stopped working. Empty HTTP packets are sent and rece

**PA Bear [MS MVP]**

[Forwarded to microsoft.public.windows.vista.networking_sharing for greater
exposure. Please continue the crosspost in replies. Thanks.

Dmitry wrote:
I'm using Windows Vista Business on my notebook.
Yesterday all browsers (IE7, Firefox) stopped working. I did nothing. I
didn't install or uninstall any software, didn't change any settings (but
may be windows installed some updates).

When I'm trying to open any website a browser resolves host name properly,
connects to the server and is waiting for response. That's all I get.
Network sniffer says that my computer sends and receives EMPTY
http-packets
(there are only IP and TCP headers and no data there!)

Other network software (ICQ, jabber, weather widget, torrent) is working
well even when it is using http protocol.

I've already tried to:
1. Disable windows firewall / windows defender
2. Disable add-ons in IE
3. Uninstall anti-virus software
4. Roll my system back (with system restore)
5. Connect to the internet in a different way (via 3G)
6. Disable all features in connection properties but "network client and
TCP/IP v4 protocol)
7. Rewrite network routes on my computer
8. Connect to a webserver via telnet utility and communicate with it
emulating http-client (that worked)
9. Reset network connection.
Nothing helped.

Can you advise something?
I suppose the issue is connected with incapsulation of http protocol by
the
web-browsers (do IE and firefox use the same HTTP-client component? Is
there
any way to reinstall it?)

Thank you.

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