Vexing problem with Proxy settings on Windows 7

[ingram59]

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?

 

[KemilGhoghari]

look at Windows’ proxy settings and the steps to repair this: , hopes that helpful.