We have recently upgraded our domain environment to IE 11. We use group policies to configure Proxy settings among other settings.
I have changed the GPO to use preferences as recommended, previously we used registry entries. Now it appears that the GPO will apply and you can see the settings in the registry but when you look in Internet Option, connection tab all the fields are blank. Not generally I would not care but this causes issue with Outlook Autodiscover/ free busy. They do not work unless I manually type the proxy settings in.