Internet Explorer Registry Key

The zones are in the Registry in the key HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones. This key has the following subkeys:

Local intranet 1
Trusted sites 2
Internet 3
Restricted sites 4

Loose XAML
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2402
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Loose XAML files

XAML Browser Applications
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2400
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/XAML browser Applications

XPS Documents
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2401
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/XPS documents

.NET Framework-reliant components

Permissions for components with manifests
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2007

Run components not signed with Authenticode
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2004
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Run .NET Framework-reliant components not signed with Authenticode

Run components signed with Authenticode
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2001
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Run .NET Framework-reliant components signed with Authenticode

ActiveX controls and plug-ins

Allow ActiveX Filtering
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2702

Allow previously unused ActiveX controls to run without prompt
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1208

Allow scriptlets
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1209
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Allow scriptlets

Automatic prompting for ActiveX controls
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2201
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Automatic prompting for ActiveX controls

Binary and script behaviors
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2000
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Allow binary and script behavior

Display video and animation on a web page that does not use external media player
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\120A
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Allow video and animation on a Web page that uses a legacy media player

Download signed ActiveX controls
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1001
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Download signed ActiveX controls

Download unsigned ActiveX controls
REG:HKEY_CURRENT_USER\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1004
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Download unsigned ActiveX controls

Initialize and script ActiveX controls not marked as safe for scripting
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1201
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Initialize and script ActiveX controls not marked as safe

Only allow approved domains to use ActiveX without prompt
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\120B
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Only allow approved domains to use ActiveX without prompt

Run ActiveX controls and plug-ins
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1200
Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Run ActiveX controls and plugins

Script ActiveX controls marked for safe scripting*
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1405
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Script ActiveX controls marked safe for scripting

Downloads

File download
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1803
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Allow file downloads

Font download
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1604
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Allow font downloads

Enable .NET Framework setup

Enable .NET Framework setup
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2600
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Disable .NET Framework Setup

Miscellaneous

Access data sources across domains
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1406
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Access data sources across domains

Allow META refresh
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1608
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Allow META REFRESH

Allow scripting of Microsoft web browser control
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1206
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Allow scripting of Internet Explorer web browser control

Allow script-initiated windows without size or position constraints
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2102
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Allow script-initiated windows without size or position constraints

Allow webpages to use restricted protocols for active content
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2300
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Allow active content over restricted protocols to access my computer

Allow websited to open windows without address or status bars
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2104
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Allow websited to open windows without address or status bars

Display mixed content
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1609
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Display mixed content

Don’t prompt for client certificate selection when no certificates or only one certificate exists
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1A04
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Don’t prompt for client certificate selection when no certificates or only one certificate exists

Drag and drop or copy and paste files
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1802
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Allow drag and drop or copy and paste files

Enable MIME Sniffing
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2100
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Enable MIME Sniffing

Include local directory path when uploading to a server
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\160A
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Include local directory path when uploading to a server

Launching applications and unsafe files
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1806
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Launching programs and unsafe files

Launching programs and files in an IFRAME
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1804
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Launching aaplications and files in an IFRAME

Navigate windows and frames across different domains
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1607
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Navigate windows and frames across different domains

Submit nonencrypted form data
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1601
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Submit non-encrypted form data

Use Pop-up Blocker
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1809
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Use Pop-up Blocker

Use SmartScreen Filter
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2301
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Use SmartScreen Filter

User data persistence
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1606
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Userdata persistence

Websites in less privileged content zone can navigate into this zone
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\2101
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Web sites in less privileged Web content zone can navigate into this zone

Scripting

Active scripting
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1400
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Allow active scripting

Allow programmatic clipboard access
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1407
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Allow cut, copy or paste operations from the clipboard via script

Allow Status bar updates via script
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4\1001
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Allow Status bar updates via script

Allow websites to prompt for information using scripted windows
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\4\2105
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Allow websites to prompt for information using scripted windows

Enable XSS filter
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1409
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Turn on Cross-Site Scripting (XSS) Filter

Scripting of Java applets
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1402
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Scripting of Java applets

User authentication

Logon
REG:HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Zones\3\1A00
GPO:Computer Configuration/Administrative Templates/Windows Components/Internet Explorer/Internet Control Panel/Security Page/Internet Zone/Logon options

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