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This did work and unfortunately does seem to be the only way to get rid of the settings as GPO seems to hide things.<br />
By overriding the GPO with a new setting it works.
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This did work and unfortunately does seem to be the only way to get rid of the settings as GPO seems to hide things.
By overriding the GPO with a new setting it works.

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In our environment we have a previously deployed ISA Server that we pushed users to via GPO into the autoconfigure script portion of the settings in IE.<br />
<br />
However we are looking to migrate to a cloud based web filtering solution so we have to put thier proxy settings into the browser. I am planning to do this via a pac file.<br />
<br />
I have the pac file crafted and it works correctly with firefox or a virgin install of IE ( never had our ISA configuration pushed to it ).<br />
<br />
However if i change the configuration in the browser to somehting other than our ISA server the traffic still continues to &quot;remember&quot; the ISA server . I can witness this via ip checking sites.<br />
<br />
Any idea where this information is hanging out and how to get rid of it to force my new pac file to actually be read in and utilized?<br />

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In our environment we have a previously deployed ISA Server that we pushed users to via GPO into the autoconfigure script portion of the settings in IE.

However we are looking to migrate to a cloud based web filtering solution so we have to put thier proxy settings into the browser. I am planning to do this via a pac file.

I have the pac file crafted and it works correctly with firefox or a virgin install of IE ( never had our ISA configuration pushed to it ).

However if i change the configuration in the browser to somehting other than our ISA server the traffic still continues to "remember" the ISA server . I can witness this via ip checking sites.

Any idea where this information is hanging out and how to get rid of it to force my new pac file to actually be read in and utilized?


Internet Explorer Retaining Previous Proxy Settings

Web browsers are applications used primarily to display documents, files and media from the Internet, identified by a Uniform Resource Identifier (URI) that can be a page, image, video or other file. Some browsers require the use of add-ons or extensions to safely render the information they receive; others have systems built into them to perform the same functions.

Web Browsers

Microsoft Forefront, formerly known as Internet Security and Acceleration Server (ISA Server), is a network router, firewall, antivirus program, VPN server and web cache that runs on Windows servers. It includes identity management and protection systems, and discontinued systems for threat management and network protection, along with protection for Sharepoint and Exchange. The scope of discussions includes forward and reverse proxy, application and service publishing, virtual private networks (VPNs), outbound access rules, SSL certificates and network routing within either a single node or an highly-available array pairing.