Member Avatar for lincol

I Have Some Pcs On My Lan That Try To Access Local (lan) Pages Using Proxy, We Have Win2000 And Ie6. I Have Seen This Thread Before But Without A Solution.
Proxy Settings On Ie6 Are Configured To Bypass Local Pages (by Ip And By Name) Still Ie6 Use The Proxy To Try The Connection.
Thanks...

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When one workstation refuses to honor the same proxy exceptions that work across the rest of a network, the cause is almost always a local override — not a global policy problem. described a single stubborn client and pointed toward the exception list; below is a compact, ordered checklist of checks and quick diagnostics that isolate local causes.

Start with auto-configuration and PAC/WPAD. An automatic configuration script or WPAD response will override manual exceptions. Inspect LAN Settings for auto-config, and check the AutoConfigURL registry value at
HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\AutoConfigURL.

Quick registry checks (WinINet):

reg query "HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v ProxyEnable
reg query "HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v ProxyServer
reg query "HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings" /v ProxyOverride

Remember ProxyOverride is semicolon-separated. Use <local> to bypass single-label intranet names and add explicit patterns for dotted names or IP ranges (example: localhost;127.0.0.1;<local>;*.intranet.company;10.*.*.*).

Also check WinHTTP proxy settings (some utilities/services use these), hosts file entries (%windir%\system32\drivers\etc\hosts), and DNS resolution (ipconfig /flushdns). Use gpresult /r to reveal Group Policy overrides, and run a packet trace or netstat to confirm whether traffic is actually hitting a proxy IP/port. Look for startup items, BHOs or LSPs that can force proxy redirection and run current anti-malware scans. If a local-profile problem is suspected, test with a fresh Windows user account. As a last resort reset Winsock (netsh winsock reset) and restore Internet Options to defaults, then reboot and retest.

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Member Avatar for alc6379

In Internet Options, did you specify any specific domains and IP ranges to not use the proxy, in addition to Local web pages? That may make a difference.

In the LAN options, there's an Advanced button that allows you to add in such exceptions. It's probably just what you're looking for.

Member Avatar for lincol

Thanks for your help.
I had configured the proxy exceptions properly, My LAN has more than 500 PCs and all the other are working fine with the same configuration.
Since the problem was taking me much time I got the PC formated and reinstalled, but I still don't know what was the problem (frustrating!!). It could have been a worm or some software the user had installed that caused the IE problems handling the proxy exceptions

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