Cannot Access External http sites

[Alexander Higgins]

A client computer on our network is having a weird problem. The Pc
can access network resources on the local lan and internet using all
protocols except HTTP. nslookup, ftp, ping (icmp) etc all work
fine.

The PC can access our Intranet website via HTTP, but when trying to
pull up any web pages on the internet IE returns a 404 error and
Netscape gives and error saying the host actively refused the
connection. Again, DNS queries work fine and so does FTP.

Has anyone seen this?? It is quite baffling.

Windows xp services pack 2. Same issue with ie6, ie7 and netscape.
Have disabled personal firewall, anti virus (norton) with no luck.
Tried Wireless ( 3 different networks) and wired connection with same
issue. Seems after rebooting the PC can access the internet for a few
minutes, then the errors begin occurring.

Any suggestions/Advice

 

[John Wunderlich]

m:

A client computer on our network is having a weird problem. The
Pc can access network resources on the local lan and internet
using all protocols except HTTP. nslookup, ftp, ping (icmp) etc
all work fine.

The PC can access our Intranet website via HTTP, but when trying
to pull up any web pages on the internet IE returns a 404 error
and Netscape gives and error saying the host actively refused the
connection. Again, DNS queries work fine and so does FTP.

Has anyone seen this?? It is quite baffling.

Windows xp services pack 2. Same issue with ie6, ie7 and
netscape. Have disabled personal firewall, anti virus (norton)
with no luck. Tried Wireless ( 3 different networks) and wired
connection with same issue. Seems after rebooting the PC can
access the internet for a few minutes, then the errors begin
occurring.

Any suggestions/Advice

This sounds very much like a firewall problem. Try the following:

1) Uninstall any firewall product on your machine ("disabling" doesn't
always work)
2) Uninstall any VPN Client software you might have installed (they
usually have a firewall function as well)
3) You might try running LSPFix.
<http://cexx.org/lspfix.htm>
4) Try booting in Safe Mode with Networking. If your computer then
works, then something that gets loaded after the basic boot is
inhibiting access. Use a program like AutoRuns to enable/disable
blocks of startup programs until you narrow it down...
<http://www.microsoft.com/technet/sysinternals/Utilities/AutoRuns.mspx>

HTH,
John

 

[Alexander Higgins]

m:










This sounds very much like a firewall problem. Try the following:

1) Uninstall any firewall product on your machine ("disabling" doesn't
always work)
2) Uninstall any VPN Client software you might have installed (they
usually have a firewall function as well)
3) You might try running LSPFix.
<http://cexx.org/lspfix.htm>
4) Try booting in Safe Mode with Networking. If your computer then
works, then something that gets loaded after the basic boot is
inhibiting access. Use a program like AutoRuns to enable/disable
blocks of startup programs until you narrow it down...
<http://www.microsoft.com/technet/sysinternals/Utilities/AutoRuns.mspx>

HTH,
John- Hide quoted text -

- Show quoted text -

Thanks John,

I am currently trying the fix below and will proceed with your
suggestion if the problem persists.

regsvr32 SOFTPUB.DLL
regsvr32 Wintrust.dll
regsvr32 Mssip32.dll
regsvr32 Initpki.dll
regsvr32 Msjava.dll
regsvr32 Gpkcsp.dll
regsvr32 Sccbase.dll
regsvr32 Slbcsp.dll
regsvr32 Urlmon.dll
regsvr32 Cryptdlg.dll
regsvr32 Dssenh.dll
regsvr32 Rsaenh.dll
regsvr32 Mshtml.dll
regsvr32 Urlmon.dll
regsvr32 Shdocvw.dll
regsvr32 Msjava.dll
regsvr32 Actxprxy.dll
regsvr32 Oleaut32.dll
regsvr32 Browseui.dll
regsvr32 Shell32.dll

ipconfig /flushdns
ipconfig /renew
netsh winsock reset

' then disable all IE add ons from internet options-->Programs-->
manage add ons

 

[Alexander Higgins]

Ok that fix worked for about 24 hours... the issue is back