How to see settings when "custom level" is greyed out in Internet Explorer

Question

Group Policy is set which causes the custom level button to be greyed out in Internet Explorer. Thus, I can't even see what settings are set let alone change them. Is there any good way to even figure out which settings are set?
And no, it's not in the Group Policy Management Console. The settings were imported from some machine a long time ago. It's not like there's a list of the settings in GPMC showing what is set. So, the only way apparently to change the setting in Group Policy is
to configure some machine with the right settings, install GPMC and import from that machine overwriting the old policy. So, I need to know what's set now (not that I necessarily even want to do that).
machine in question: Windows Server 2008 R2 datacenter
IE version: 9 with all patches

Answer 1

Hi,
Please understand that all IE security settings are stored in the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings
HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings
If you want to check the settings on the machine, you should local the registry keys in Registry Editor. If you want to import the settings from one machine, please just right click on the
target registry key and choose Export to export these settings to a .reg file.
Regarding detailed information about Internet Explorer security zones registry entries, please refer to the following article.
Internet Explorer security zones registry entries for advanced users
http://support.microsoft.com/kb/182569/en-us
In addition, here is an article about how to reset Security Settings back to Windows Defaults, maybe it’s useful to us.
Reset Security Settings back to Windows Defaults
https://blogs.technet.com/b/fixit4me/archive/2009/01/30/reset-security-settings-back-to-the-defaults-fix-it-live.aspx
Best Regards,
Andy Qi
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