VERY PERPLEXING issue with proxy configuration on Windows 7

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    The issue I’m describing is VERY FRUSTRATING. We are decommissioning a proxy server yet our firewall is still showing windows 7 computers hitting the proxy server.

    Here are the steps that I’ve taken and what I’ve looked at on one of the computers in question.

    DESELECTED “Automatically Detect Settings”

    Set “Use automatic configuration script” to reference the CORRECT proxy server that is currently in use

    DESELECTED AND CLEARED the entry under the “Proxy Server” entry for “Use a proxy server for your LAN……” Fields are blank and UNCHECKED

    Edited the registry and removed ALL references to the proxy server that we DO NOT want to reference (the one being decommissioned) both IP address and the hostname that references the proxy server.

    Changed the one installed application to point to the correct proxy server.

    Flushed the DNS cache on the workstation.

    With ALL these steps taken, can someone tell me where to look or tell me why the machine is still trying to reach out to the proxy that we’re decommissioning?


    Are you certain there are no Group Policy settings or GP Preferences applied to either the machines or usesr which could be adding that old value back in?


    Never used proxy servers but this looks like it might help you towards a solution: It was posted in response to a question on MS forums that was the same as yours.


    Might be worth looking to see if WPAD had been setup as well. Check DNS and DHCP to see if the proxy is being set via either of them.

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