Internet Options, LAN Settings don't save when using Run As

Question

Hi,
On Windows Server 2012 RTM with IE ESC off I can log on to the console of the server as UserA, I can open IE, open the Internet Options window, select the Connections tab, click LAN Settings, change a setting (eg specify a proxy server), click OK, and click
LAN Settings again to confirm my changes were saved.
However, if whilst logged on as UserA, I right-click the IE icon on the taskbar, select "Run as different user" and specify credentials for UserB instead, any changes I make in the LAN Settings window are forgotten the moment I click OK.
But, if I log on to the console of the server as UserB and open IE, the LAN Settings window does remember the changes I make, so this is not a user permissions or Group Policy issue.
Additionally, if I use Fiddler's "Tools, WinINET Options" menu to access the Internet Options window, I experience the same variations in behaviour I described above depending on whether Fiddler is run from the console user, or via "Run as different user".
Lastly, using Sysinternals's ProcMon, when the LAN Settings are saved correctly, I can see it is done via DllHost.exe (WinInetBroker) calling GetUrlCacheEntryInfoEx which in turn writes the "Internet Settings\Connections\DefaultConnectionSettings" value
to the registry. I can also see iexplore.exe writing the "Internet Settings\Connections\SavedLegacySettings" key. When attempting to change the LAN Settings when "Run as a different user", ProcMon still shows the successful write to the SavedLegacySettings
key but the other key is never written to, there isn't even an Access Denied.
A reference to "GetAppContainerRegistryLocation" in one of the ProcMon captured stack traces suggests this is behaviour new to Windows 8 as part of the "Metro"-style app isolation, however this is occuring in IE desktop mode and Fiddler (which is not a Metro
app).
I believe this is either a bug that needs to be fixed to allow changes to save correctly or return an error when attempting to save the changes if they will be ignored. At the very least, this behaviour needs to be documented.
Regards,
Jason

Answer 1

Hi Jason,
I have tested in my lab, and got same result with you. below is my test and results.
1. log on with user1>> click "IE" and select "Run as different user">> type user2's credential >>change proxy, click "OK". open "internet option" again, the change was not saved.
2. log on with user2, check proxy in IE, the change was not saved.
Then I tested on "Home Page", zone settings, , I found the changes can be saved.
I have done further test on other applications, such as notepad (enable/disable status base), calculator (View >> standard/scientific/programmer/statistics), the change can be save from "Run as different user".
since this is a behavior of IE, I suggest you submit a post in IE forum and IE experts may give you explanation on that.
Thanks.
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