Windows Security Zones - Registry Details

In Windows websites are mapped to a security zone and the zone determines what is and it not allowed for that site.

This article includes information about where these settings are in the registry and links to further info.

Registry Paths

Zone information can be stored under any of the following registry paths.

HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings

HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows\CurrentVersion\Internet Settings

Under these paths there are two possible Keys that may have relevant values: ZoneMap and Zones


The ZoneMap contains the components of the URL including the protocol (http, https). The are broken into pieces so you can't search for the entire URL.

The basic structure is domain at the top level with subdomain or machine underneath. The protocols are stored as values in the right hand panel.

a REG_DWORD = 1 is Intranet Zone. Which is the desired values for ADAMS.


The allowed/denied settings for the zones are under the Zones key. The zones are 0-4 with 1 being the intranet zone.

The values are stored as integers. The list of numbers and their settings are here: Internet Explorer security zones registry entries for advanced users

A value of zero is enabled.

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