School system migrating from Novell to Microsoft AD. We migrated our first building last week and have run into a little snag with our Group Policy. All other policies are shooting down perfectly, except for our IE proxy settings.
Last year we deployed IE7 to our school division using a customized install of IE7 using the IEAK. Part of the configuration was to have the Proxy settings and exceptions built into the install of IE7. This worked great for us until we began our migration to Microsoft AD, which has forced us to use a new proxy address.
Long story short, it appears that the workstations that had our customized install of IE7 are not applying the "new" IE proxy server and exceptions settings sent down by Group Polilcy upon the user's first logon. If the user logs off and back on again, the correct proxy settings are applied.
This is not a problem for our teachers and administrative offices because those users typically use the same workstation. This is a problem for our computer labs and laptop carts for student access. It is rare for a student to use the same computer twice in the same week - they usually sit at any available computer when they come into a computer lab.
I have read that IE 7 applies proxy settings as per-machine rather than per-user, so I have already tried changing the computer policies to disable the application of IE settings as per-machine. This did not change anything.
I've also tried setting the typical Internet Explorer maintenance configurations, as well as, the settings available in Group Policy Preferences - none have made a difference.
This problem doesn't seem to be occurring our IE8 or IE6 workstations, nor on our workstations that did not use our customized install of IE7.
Is there anything I'm missing?? My last resort is to script the proxy exceptions and hope for the best, but we have 14 proxy exception lists (depending on the security group/computer combination) and that's a lot of scripts to maintain.
Servers: Windows Server 2008 R2
Clients: Windows XP Sp3