IE 9 "ignores" .pac auto config script and try to access internet directly

Hi greedj,

Thanks for the example .pac file,

The way we've set it up is that it is a .pac file copied locally to the Notebooks by a GPO, but when IE9 is told to look at this file (file://c:/proxy.pac) it seems to ignore it regardless of the content of the .pac file.

This .pac file (attached higher up on this support question) works fine on IE 7 and IE8 but even if I modify it to tell IE to use our proxy server for all websites it still tries to access the internet "directly" without even trying to go through the proxy server, so I am trying to establish how one can see if the browser does infact try to work through the proxy server or if it does look at the .pac file, did Microsoft not build something into IE9 that it's got some kind of intelligence to bypass 'n .pac file and follow it's own mind in certain scenarios?

I don't really know where to start looking, perhaps the format of the path to the .pac file is not the same for IE9 and need to change? (we use format "(file://c:/proxy.pac) ")

Thanks,
Reinhard

You can not put the pac file local. IE will ignore it, its a security feature. It must be hosted on a web server.

Hi GreedJ,

Thanks I will do that, as a matter of interest, what happens when a notebook cannot see that webserver? (in other words, at work the notebook sees the proxy.pac file on an internal webserver and adheres to it, when the guy now goes hom and the notebook cannot see the proxy.pac will it automatically now assume not to use a proxy server and connect directly? (this is in fact what I would want, might be the solution to my problem...)

Thanks,
Reinahrd

Hi greedj,

Excellent, thanks, this then solves my problem completely :)

Regards,
Reinhard.