Feature Control in Internet Explorer

Recent versions of Internet Explorer introduce yet another collection of registry settings. This batch are called feature controls. They are in general boolean, such that evaluation as true means that the corresponding feature, which is often some kind of restriction or prohibition, is enabled.

As with several other collections, the feature controls may appear in any of several branches. In order of decreasing precedence, these are:

except that the branches in HKEY_CURRENT_USER are ignored if the following evaluates to 1:

Key HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings
Value Security_HKLM_only
Type REG_DWORD

The merit of allowing each setting at the same place with respect to multiple branches is the usual one of establishing policies versus preferences, machine-wide or per user.

The particular merit of the feature controls is that they evaluate their features per-process. Each feature’s name is a subkey of the FeatureControl key. The values in the feature’s key each name a process. A special value * catches processes that aren’t named explicitly. A feature is evaluated for a process by iterating through the applicable branches in order of decreasing precedence and accepting the first value that applies to that process. It does not matter which branch the value comes from. Each feature has a default for when no applicable value is found in any branch. For many features, the default depends on whether the process’s filename is any of EXPLORER.EXE, IEXPLORE.EXE or IEUSER.EXE.

Key HKEY_LOCAL_MACHINE\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl
HKEY_CURRENT_USER\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControl
HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\FeatureControl
HKEY_LOCAL_MACHINE\Software\Microsoft\Internet Explorer\Main\FeatureControl
Subkey feature
Value filename for any process whose executable has that filename (subject to note below);
* for all executables
Type REG_SZ in policy branches, else REG_DWORD
Data the string 0 in policy branches, else the dword 0, for false;
the string 1 in policy branches, else the dword 1, for true;
else value is ignored
Default varies with feature and filename

Among the filename values for any feature control, iexplore.exe stands also for any process whose filename is “ieuser.exe”, with the side-effect that values named ieuser.exe are ignored.

Some features are made programmatically accessible through functions exported from URLMON. The archetype is CoInternetIsFeatureEnabled, but there are also variants that provide for the question “is this feature enabled” to depend on extra arguments such as a URL. These features are documented. Some even have user-interface support, if only through the Group Policy Object Editor.

Of particular interest here is the existence of rather many features that Microsoft does not document. These are checked by several Internet Explorer modules, using library code for consistency. This library code differs from URLMON in one respect: the different default applies only to IEXPLORE.EXE and EXPLORER.EXE, not to IEUSER.EXE. The list that follows is very unlikely to be complete, regarding these internal features. It would also not surprise if the internal features are highly volatile from one Windows version to another. The list below, which is still in development in various ways, comes from inspection of Windows XP up to and including SP2, Windows Server 2003 up to and including SP1, and Windows Vista.

By the way, I do not propose to investigate what any (let alone all) of the features listed below actually do.

Feature COMPRESSED_CONTENT_RESPECTS_SSL_CACHING_SETTING
Default 1
Availability URLMON.DLL version 6.00 from Windows XP SP2, and higher

This is an internal feature control, read by URLMON.

Feature FEATURE_ACTIVEX_REPURPOSEDETECTION
Default 1 for EXPLORER.EXE and IEXPLORE.EXE;
0 otherwise
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_ADDON_MANAGEMENT
Default 1 for EXPLORER.EXE, IEUSER.EXE and IEXPLORE.EXE;
0 otherwise
Availability URLMON.DLL version 6.00 from Windows XP SP2, and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x0D in the INTERNETFEATURELIST enumeration.

The FEATURE_ADDON_MANAGEMENT feature has user-interface support through the Group Policy Object Editor, as Add-on Management among the Security Features in the Internet Explorer administrative template (displayed under Windows Components).

In a fresh installation of Windows Vista, FEATURE_ADDON_MANAGEMENT is enabled for the following process: wmplayer.exe.

Feature FEATURE_ALLOW_EXPANDURI_BYPASS
Default 1
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_BEHAVIORS
Default 1
Availability URLMON.DLL version 6.00 from Windows XP SP2, and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x06 in the INTERNETFEATURELIST enumeration.

The FEATURE_BEHAVIORS feature has user-interface support through the Group Policy Object Editor, as Binary Behavior Security Restriction among the Security Features in the Internet Explorer administrative template (displayed under Windows Components).

In a fresh installation of Windows Vista, FEATURE_BEHAVIORS is:

Feature FEATURE_BLOCK_INPUT_PROMPTS
Default 1 for EXPLORER.EXE, IEUSER.EXE and IEXPLORE.EXE;
0 otherwise
Availability URLMON.DLL version 7.00 and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x1B in the INTERNETFEATURELIST enumeration.

Feature FEATURE_BLOCK_LMZ_IMG
Default 1 for EXPLORER.EXE and IEXPLORE.EXE;
0 otherwise
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_BLOCK_LMZ_OBJECT
Default 1
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_BLOCK_LMZ_SCRIPT
Default 1
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_BLOCK_SETCAPTURE_XDOMAIN
Default 1
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_BUFFERBREAKING_818408
Default 0
Availability WININET.DLL version 6.00 from Windows Server 2003 SP1, and higher

This is an internal feature control, read by WININET.

Feature FEATURE_CFSTR_INETURLW_DRAGDROP_FORMAT
Default 1
Availability IEFRAME.DLL version 7.00 and higher;
MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by IEFRAME and MSHTML.

Feature FEATURE_CLEANUP_AT_FLS
Default 0
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_CONSULT_MIME_KILLBIT_KB905915
Default 1
Availability URLMON.DLL version 7.00 and higher

This is an internal feature control, read by URLMON.

Feature FEATURE_CONTENT_ADVISOR_FRAME_ABOUT_BLANK_SSL_KB827259
Default 0
Availability MSHTML.DLL version 6.00 from Windows XP SP2, and higher 

This is an internal feature control, read by MSHTML.

Feature FEATURE_CONVERT_A3A0INGB2312
Default 1
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_CREATE_URL_MONIKER_DISABLE_LEGACY_COMPAT
Default 1 for EXPLORER.EXE and IEXPLORE.EXE;
0 otherwise
Availability URLMON.DLL version 7.00 and higher

This is an internal feature control, read by URLMON.

Feature FEATURE_CrossDomain_Fix_KB867801
Default 1
Availability MSHTML.DLL version 6.00 from Windows XP SP2, and higher 

This is an internal feature control, read by MSHTML.

Feature FEATURE_Cross_Domain_Redirect_Mitigation
Default 1 for EXPLORER.EXE and IEXPLORE.EXE;
0 otherwise
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_CSS_DATA_RESPECTS_XSS_ZONE_SETTING_KB912120
Default 1
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_CUSTOM_IMAGE_MIME_TYPES_KB910561
Default 0
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_DELETE_ABORTED_COMPRESSED_FILES_KB834224
Default 0
Availability URLMON.DLL version 6.00 from Windows XP SP2, and higher

This is an internal feature control, read by URLMON.

Feature FEATURE_DIGEST_NO_EXTRAS_IN_URI
Default 0
Availability WININET.DLL version 7.00 and higher

This is an internal feature control, read by WININET.

Feature FEATURE_DISABLE_LEGACY_COMPRESSION
Default 1
Availability URLMON.DLL version 7.00 and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x16 in the INTERNETFEATURELIST enumeration.

Feature FEATURE_DISABLE_MK_PROTOCOL
Default 1
Availability URLMON.DLL version 6.00 from Windows XP SP2, and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x07 in the INTERNETFEATURELIST enumeration.

The FEATURE_DISABLE_MK_PROTOCOL feature has user-interface support through the Group Policy Object Editor, as MK Protocol Security Restriction among the Security Features in the Internet Explorer administrative template (displayed under Windows Components).

In a fresh installation of Windows Vista, FEATURE_DISABLE_MK_PROTOCOL is:

Feature FEATURE_DISABLE_NAVIGATION_SOUNDS
Default 0
Availability URLMON.DLL version 7.00 and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x15 in the INTERNETFEATURELIST enumeration.

Feature FEATURE_DISABLE_TELNET_PROTOCOL
Default 1 for EXPLORER.EXE, IEUSER.EXE and IEXPLORE.EXE;
0 otherwise
Availability URLMON.DLL version 7.00 and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x19 in the INTERNETFEATURELIST enumeration.

Feature FEATURE_DISABLE_UNICODE_HANDLE_CLOSING_CALLBACK
Default 0
Availability WININET.DLL version 7.00 and higher

This is an internal feature control, read by WININET.

In a fresh installation of Windows Vista, FEATURE_DISABLE_UNICODE_HANDLE_CLOSING_CALLBACK is enabled for the following process: YahooMusicEngine.exe.

Feature FEATURE_DISPLAY_NODE_ADVISE_KB833311
Default 1
Availability MSHTML.DLL version 6.00 from Windows XP SP2, and higher 

This is an internal feature control, read by MSHTML.

Feature FEATURE_DOCTYPE_FOCUS_SCROLLBAR_KB838386
Default 0
Availability MSHTML.DLL version 6.00 from Windows Server 2003 SP1, and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_DOWNLOAD_PROMPT_META_CONTROL
Default 1
Availability SHDOCVW.DLL version 6.00 from Windows XP SP2 and Windows Server 2003 SP1;
IEFRAME.DLL version 7.00 and higher

This is an internal feature control, read by SHDOCVW and IEFRAME.

Feature FEATURE_DRAGDROP_KB834707
Default 1
Availability MSHTML.DLL version 6.00 from Windows Server 2003 SP1, and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_ENABLE_ACTIVEX_INACTIVATE_MODE
Default 1 for EXPLORER.EXE and IEXPLORE.EXE;
0 otherwise
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

Feature Feature_Enable_Compat_Logging
Default 0
Availability IERTUTIL.DLL version 7.00 and higher

This is an internal feature control, read by IERTUTIL.

Feature FEATURE_Enable_IE_Compression
Default 0
Availability URLMON.DLL version 6.00 from Windows Server 2003 SP1, and higher

This is an internal feature control, read by URLMON.

Feature FEATURE_Enable_MixContent_Goldbar
Default 0
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_ENABLE_SCRIPT_PASTE_URLACTION_IF_PROMPT
Default 0 for EXPLORER.EXE and IEXPLORE.EXE;
1 otherwise
Availability URLMON.DLL version 7.00 and higher

This is an internal feature control, read by URLMON.

In a fresh installation of Windows Vista, FEATURE_ENABLE_SCRIPT_PASTE_URLACTION_IF_PROMPT is enabled for the following processes: devenv.exe, dexplore.exe and helppane.exe.

Feature FEATURE_ENHANCED_IMAGE_DRAGDROP_SECURITY_KB867282
Default 1 for EXPLORER.EXE and IEXPLORE.EXE;
0 otherwise
Availability MSHTML.DLL version 6.00 from Windows Server 2003 SP1, and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_FEEDS
Default 1 for EXPLORER.EXE, IEUSER.EXE and IEXPLORE.EXE;
0 otherwise
Availability URLMON.DLL version 7.00 and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x1A in the INTERNETFEATURELIST enumeration.

Feature FEATURE_FORCE_ADDR_AND_STATUS
Default 1 for EXPLORER.EXE, IEUSER.EXE and IEXPLORE.EXE;
0 otherwise
Availability URLMON.DLL version 7.00 and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x17 in the INTERNETFEATURELIST enumeration.

Feature FEATURE_GET_URL_DOM_FILEPATH_UNENCODED
Default 1
Availability URLMON.DLL version 6.00 from Windows XP SP2, and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x12 in the INTERNETFEATURELIST enumeration.

Feature FEATURE_HIGH_CONTRAST_BACKGROUND_IMAGES
Default 0
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

In a fresh installation of Windows Vista, FEATURE_HIGH_CONTRAST_BACKGROUND_IMAGES is enabled for the following process: sidebar.exe.

Feature FEATURE_HTTP_USERNAME_PASSWORD_DISABLE
Default 1 for EXPLORER.EXE, IEUSER.EXE and IEXPLORE.EXE;
0 otherwise
Availability URLMON.DLL version 6.00 from Windows XP SP2, and higher;
WININET.DLL version 6.00 from Windows Server 2003 SP1, and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x0F in the INTERNETFEATURELIST enumeration. It is also accessed as an internal feature control, by WININET.

In a fresh installation of Windows Vista, FEATURE_HTTP_USERNAME_PASSWORD_DISABLE is enabled for the following processes: ehExtHost.exe and wmplayer.exe.

Feature FEATURE_IE6_Default_Frame_Navigation_Behavior
Default 0
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_IEDDE_REGISTER_PROTOCOL
Default 0
Availability IEFRAME.DLL version 7.00 and higher

This is an internal feature control, read by IEFRAME.

Feature FEATURE_IEDDE_REGISTER_URLECHO
Default 0
Availability IEFRAME.DLL version 7.00 and higher

This is an internal feature control, read by IEFRAME.

Feature FEATURE_IGNORE_MAPPINGS_FOR_CREDPOLICY
Default 1
Availability WININET.DLL version 7.00 and higher

This is an internal feature control, read by WININET.

Feature FEATURE_IGNORE_POLICIES_ZONEMAP_IF_ESC_ENABLED_KB918915
Default 0
Availability URLMON.DLL version 7.00 and higher

This is an internal feature control, read by URLMON.

Feature FEATURE_IGNORE_XML_PROLOG
Default 1
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

In a fresh installation of Windows Vista, FEATURE_IGNORE_XML_PROLOG is disabled for the following process:

Feature FEATURE_IMAGING_USE_ART
Default 0
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

In a fresh installation of Windows Vista, FEATURE_IMAGING_USE_ART is enabled for the following processes: cs.exe, waol.exe and wm.exe.

Feature FEATURE_INCLUDE_PORT_IN_SPN_KB908209
Default 0
Availability WININET.DLL version 7.00 and higher

This is an internal feature control, read by WININET.

Feature FEATURE_INTERNET_SHELL_FOLDERS
Default 1
Availability IEFRAME.DLL version 7.00 and higher

This is an internal feature control, read by IEFRAME.

In a fresh installation of Windows Vista, FEATURE_INTERNET_SHELL_FOLDERS is disabled for the following process: iexplore.exe.

Feature FEATURE_LEGACY_DISPPARAMS
Default 0 for EXPLORER.EXE and IEXPLORE.EXE;
1 otherwise
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

In a fresh installation of Windows Vista, FEATURE_LEGACY_DISPPARAMS is disabled for the following process: helppane.exe.

Feature FEATURE_LIMIT_MONIKERS
Default 1
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_LOCALMACHINE_LOCKDOWN
Default 1 for EXPLORER.EXE, IEUSER.EXE and IEXPLORE.EXE;
0 otherwise
Availability URLMON.DLL version 6.00 from Windows XP SP2, and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x08 in the INTERNETFEATURELIST enumeration.

The FEATURE_LOCALMACHINE_LOCKDOWN feature has user-interface support through Internet Properties in the Control Panel, as “Allow active content to run in files on My Computer” in the Security group on the Advanced tab. Note however that filename is constrained to “iexplore.exe”. This feature has user-interface support as a policy, too, through the Group Policy Object Editor, as Local Machine Zone Lockdown Security among the Security Features in the Internet Explorer administrative template (displayed under Windows Components).

In a fresh installation of Windows Vista, FEATURE_LOCALMACHINE_LOCKDOWN is enabled for the following processes: explorer.exe, iexplore.exe and wmplayer.exe.

Feature FEATURE_MIME_HANDLING
Default 1 for EXPLORER.EXE, IEUSER.EXE and IEXPLORE.EXE;
0 otherwise
Availability URLMON.DLL version 6.00 from Windows XP SP2, and higher;
WININET.DLL version 6.00 from Windows Server 2003 SP1, and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x02 in the INTERNETFEATURELIST enumeration. It is also accessed as an internal feature control, by WININET.

The FEATURE_MIME_HANDLING feature has user-interface support through the Group Policy Object Editor, as Consistent Mime Handling among the Security Features in the Internet Explorer administrative template (displayed under Windows Components).

In a fresh installation of Windows Vista, FEATURE_MIME_HANDLING is enabled for the following processes: ehExtHost.exe, explorer.exe, iexplore.exe and wmplayer.exe.

Feature FEATURE_MIME_SNIFFING
Default 1 for EXPLORER.EXE, IEUSER.EXE and IEXPLORE.EXE;
0 otherwise
Availability URLMON.DLL version 6.00 from Windows XP SP2, and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x03 in the INTERNETFEATURELIST enumeration.

The FEATURE_MIME_SNIFFING feature has user-interface support through the Group Policy Object Editor, as Mime Sniffing Safety Feature among the Security Features in the Internet Explorer administrative template (displayed under Windows Components).

In a fresh installation of Windows Vista, FEATURE_MIME_SNIFFING is enabled for the following processes: ehExtHost.exe, explorer.exe, iexplore.exe and wmplayer.exe.

Feature FEATURE_NO_FIEF_UI
Default 0
Availability URLMON.DLL version 7.00 and higher

This is an internal feature control, read by URLMON.

Feature FEATURE_Not_Terminate_WorkerThread
Default 1
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_OBJECT_CACHING
Default 1
Availability URLMON.DLL version 6.00 from Windows XP SP2, and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x00 in the INTERNETFEATURELIST enumeration.

The FEATURE_OBJECT_CACHING feature has user-interface support through the Group Policy Object Editor, as Object Caching Protection among the Security Features in the Internet Explorer administrative template (displayed under Windows Components).

In a fresh installation of Windows Vista, FEATURE_OBJECT_CACHING is:

Feature FEATURE_PAGINATION_REDUCTION_KB834158
Default 0
Availability MSHTML.DLL version 6.00 from Windows XP SP2, and higher 

This is an internal feature control, read by MSHTML.

Feature FEATURE_PERFORMANCE_ISSUE_KB843268
Default 0
Availability MSHTML.DLL version 6.00 from Windows XP SP2, and higher 

This is an internal feature control, read by MSHTML.

Feature FEATURE_PERMIT_CACHE_FOR_AUTHENTICATED_FTP_KB910274
Default 0
Availability WININET.DLL version 7.00 and higher

This is an internal feature control, read by WININET.

Feature FEATURE_PRIVATE_FONT_SETTING
Default 1
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_PROTOCOL_LOCKDOWN
Default 0
Availability URLMON.DLL version 6.00 from Windows XP SP2, and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x0E in the INTERNETFEATURELIST enumeration.

The FEATURE_PROTOCOL_LOCKDOWN feature has user-interface support through the Group Policy Object Editor, as Network Protocol Lockdown among the Security Features in the Internet Explorer administrative template (displayed under Windows Components).

In a fresh installation of Windows Vista, FEATURE_PROTOCOL_LOCKDOWN is:

Feature FEATURE_READ_ZONE_STRINGS_FROM_REGISTRY
Default 0
Availability URLMON.DLL version 7.00 and higher

This is an internal feature control, read by URLMON.

Feature FEATURE_RESPECT_OBJECTSAFETY_POLICY_KB905547
Default 0
Availability URLMON.DLL version 7.00 and higher

This is an internal feature control, read by URLMON.

Feature FEATURE_RESTRICT_ACTIVEXINSTALL
Default 1 for EXPLORER.EXE, IEUSER.EXE and IEXPLORE.EXE;
0 otherwise
Availability URLMON.DLL version 6.00 from Windows XP SP2, and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x0A in the INTERNETFEATURELIST enumeration.

The FEATURE_RESTRICT_ACTIVEXINSTALL feature has user-interface support through the Group Policy Object Editor, as Restrict ActiveX Install among the Security Features in the Internet Explorer administrative template (displayed under Windows Components).

In a fresh installation of Windows Vista, FEATURE_RESTRICT_ACTIVEXINSTALL is enabled for the following process: wmplayer.exe.

Feature FEATURE_RESTRICT_CDL
Default 1
Availability URLMON.DLL version 7.00 and higher

This is an internal feature control, read by URLMON.

Feature FEATURE_RESTRICT_FILEDOWNLOAD
Default 1 for EXPLORER.EXE, IEUSER.EXE and IEXPLORE.EXE;
0 otherwise
Availability URLMON.DLL version 6.00 from Windows XP SP2, and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x0C in the INTERNETFEATURELIST enumeration.

The FEATURE_RESTRICT_FILEDOWNLOAD feature has user-interface support through the Group Policy Object Editor, as Restrict File Download among the Security Features in the Internet Explorer administrative template (displayed under Windows Components).

In a fresh installation of Windows Vista, FEATURE_RESTRICT_FILEDOWNLOAD is enabled for the following processes: msimn.exe, winmail.exe and wmplayer.exe.

Feature FEATURE_RESTRICT_RES_TO_LMZ
Default 1 for EXPLORER.EXE and IEXPLORE.EXE;
0 otherwise
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_RESTRICTED_ZONE_WHEN_FILE_NOT_FOUND
Default 0
Availability URLMON.DLL version 7.00 and higher

This is an internal feature control, read by URLMON.

Feature FEATURE_SAFE_BINDTOOBJECT
Default 1 for EXPLORER.EXE, IEUSER.EXE and IEXPLORE.EXE;
0 otherwise
Availability URLMON.DLL version 6.00 from Windows XP SP2, and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x10 in the INTERNETFEATURELIST enumeration.

In a fresh installation of Windows Vista, FEATURE_SAFE_BINDTOOBJECT is enabled for the following processes: ehExtHost.exe, explorer.exe, iexplore.exe and wmplayer.exe.

Feature FEATURE_SANITIZE_DRAGDROP_DATA_KB867282
Default 0
Availability MSHTML.DLL version 6.00 from Windows Server 2003 SP1, and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_SCRIPTINITIATED_DRAGDROP_HITTEST_SECURITY_KB867282
Default 1 for EXPLORER.EXE and IEXPLORE.EXE;
0 otherwise
Availability MSHTML.DLL version 6.00 from Windows Server 2003 SP1, and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_SCRIPTINITIATED_DRAGDROP_RESPECTS_URLACTION_KB867282
Default 1 for EXPLORER.EXE and IEXPLORE.EXE;
0 otherwise
Availability MSHTML.DLL version 6.00 from Windows Server 2003 SP1, and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_SCRIPTINITIATED_DRAGDROP_SECURITY_KB867282
Default 1 for EXPLORER.EXE and IEXPLORE.EXE;
0 otherwise
Availability MSHTML.DLL version 6.00 from Windows Server 2003 SP1, and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_SCRIPTURL_MITIGATION
Default 1 for EXPLORER.EXE and IEXPLORE.EXE;
0 otherwise
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_SECURITYBAND
Default 1 for EXPLORER.EXE, IEUSER.EXE and IEXPLORE.EXE;
0 otherwise
Availability URLMON.DLL version 6.00 from Windows XP SP2, and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x09 in the INTERNETFEATURELIST enumeration.

The FEATURE_SECURITYBAND feature has user-interface support through the Group Policy Object Editor, as Information Bar among the Security Features in the Internet Explorer administrative template (displayed under Windows Components).

In a fresh installation of Windows Vista, FEATURE_SECURITYBAND is enabled for the following process: wmplayer.exe.

Feature FEATURE_SECURE_ANCHORCLICKBEHAVIOR_KB867282
Default 1
Availability IEPEERS.DLL version 6.00 from Windows Server 2003 SP1, and higher

This is an internal feature control, read by IEPEERS.

Feature FEATURE_SELECT_KEY_KB818614
Default  
Availability MSHTML.DLL version 6.00 from Windows XP SP2

This is an internal feature control, read by MSHTML.

Feature FEATURE_SHIM_MSHELP_COMBINE
Default 0 for EXPLORER.EXE and IEXPLORE.EXE;
1 otherwise
Availability URLMON.DLL version 7.00 and higher

This is an internal feature control, read by URLMON.

Feature FEATURE_SKIP_LEAK_CLEANUP_AT_SHUTDOWN_KB835183
Default 0
Availability MSHTML.DLL version 6.00 from Windows Server 2003 SP1, and higher

This is an internal feature control, read by MSHTML.

Feature FEATURE_SKIP_POST_RETRY_ON_INTERNETWRITEFILE_KB895954
Default 0
Availability WININET.DLL version 7.00 and higher

This is an internal feature control, read by WININET.

Feature FEATURE_SSLUX
Default 1 for EXPLORER.EXE, IEUSER.EXE and IEXPLORE.EXE;
0 otherwise
Availability URLMON.DLL version 7.0 and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x14 in the INTERNETFEATURELIST enumeration.

Feature FEATURE_SUBDOWNLOAD_LOCKDOWN
Default 0
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

In a fresh installation of Windows Vista, FEATURE_SUBDOWNLOAD_LOCKDOWN is enabled for the following processes: msimn.exe, outlook.exe and winmail.exe.

Feature FEATURE_TABBED_BROWSING
Default 1 for EXPLORER.EXE, IEUSER.EXE and IEXPLORE.EXE;
0 otherwise
Availability URLMON.DLL version 7.0 and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x13 in the INTERNETFEATURELIST enumeration.

Feature FEATURE_UNC_SAVEDFILECHECK
Default 1 for EXPLORER.EXE, IEUSER.EXE and IEXPLORE.EXE;
0 otherwise
Availability URLMON.DLL version 6.00 from Windows XP SP2, and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x11 in the INTERNETFEATURELIST enumeration.

In a fresh installation of Windows Vista, FEATURE_UNC_SAVEDFILECHECK is enabled for the following processes: ehExtHost.exe and wmplayer.exe.

Feature FEATURE_USE_CNAME_FOR_SPN_KB911149
Default 0
Availability WININET.DLL version 7.00 and higher

This is an internal feature control, read by WININET.

Feature FEATURE_USE_WINDOWEDSELECTCONTROL
Default 0
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

In a fresh installation of Windows Vista, FEATURE_USE_WINDOWEDSELECTCONTROL is enabled for the following processes: excel.exe, infopath.exe, powerpnt.exe and winword.exe.

Feature FEATURE_VALIDATE_NAVIGATE_URL
Default 1 for EXPLORER.EXE, IEUSER.EXE and IEXPLORE.EXE;
0 otherwise
Availability URLMON.DLL version 6.00 from Windows XP SP2, and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x0B in the INTERNETFEATURELIST enumeration.

In a fresh installation of Windows Vista, FEATURE_VALIDATE_NAVIGATE_URL is enabled for the following processes: ehExtHost.exe and wmplayer.exe.

Feature FEATURE_VALIDATE_URLHOSTNAME
Default  
Availability URLMON.DLL version 6.00 from Windows Server 2003 SP1

This is an internal feature control, read by URLMON.

Feature FEATURE_WARN_ON_SEC_CERT_REV_FAILED
Default 0
Availability IEFRAME.DLL version 7.00 and higher

This is an internal feature control, read by IEFRAME.

Feature FEATURE_WEBOC_MOVESIZECHILD
Default 0
Availability IEFRAME.DLL version 7.00 and higher

This is an internal feature control, read by IEFRAME.

In a fresh installation of Windows Vista, FEATURE_WEBOC_MOVESIZECHILD is enabled for the following processes: msn.exe and msn6.exe.

Feature FEATURE_WEBOC_POPUPMANAGEMENT
Default 1 for EXPLORER.EXE, IEUSER.EXE and IEXPLORE.EXE;
0 otherwise
Availability URLMON.DLL version 6.00 from Windows XP SP2, and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x05 in the INTERNETFEATURELIST enumeration.

In a fresh installation of Windows Vista, FEATURE_WEBOC_POPUPMANAGEMENT is enabled for the following processes: explorer.exe, iexplore.exe and wmplayer.exe.

Feature FEATURE_WINDOW_RESTRICTIONS
Default 1 for EXPLORER.EXE, IEUSER.EXE and IEXPLORE.EXE;
0 otherwise
Availability URLMON.DLL version 6.00 from Windows XP SP2, and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x04 in the INTERNETFEATURELIST enumeration.

The FEATURE_WINDOW_RESTRICTIONS feature has user-interface support through the Group Policy Object Editor, as Scripted Window Security Restrictions among the Security Features in the Internet Explorer administrative template (displayed under Windows Components).

In a fresh installation of Windows Vista, FEATURE_WINDOW_RESTRICTIONS is enabled for the following processes: explorer.exe, iexplore.exe and wmplayer.exe.

Feature FEATURE_XMLHTTP
Default 1
Availability URLMON.DLL version 7.00 and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x18 in the INTERNETFEATURELIST enumeration.

Feature FEATURE_ZONE_ELEVATION
Default 1 for EXPLORER.EXE, IEUSER.EXE and IEXPLORE.EXE;
0 otherwise
Availability URLMON.DLL version 6.00 from Windows XP SP2, and higher

This is a documented feature control, accessible through exported URLMON functions. It is number 0x01 in the INTERNETFEATURELIST enumeration.

The FEATURE_ZONE_ELEVATION feature has user-interface support through the Group Policy Object Editor, as Protection From Zone Elevation among the Security Features in the Internet Explorer administrative template (displayed under Windows Components).

In a fresh installation of Windows Vista, FEATURE_ZONE_ELEVATION is enabled for the following processes: ehExtHost.exe, explorer.exe, iexplore.exe, PresentationHost.exe and wmplayer.exe.

Feature IMAGING_EMF_USE_RCLFRAMESIZE_KB905299
Default 0
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

Feature KB325355_INCREASE_WEBFOLDER_MAXURLLENGTH_TO_260CHAR
Default  
Availability IEPEERS.DLL version 6.00 from Windows XP SP2 and Windows Server 2003 SP1

This is an internal feature control, read by IEPEERS.

Feature KB895948_DISABLE_MAIL_SUBDOWNLOAD_LOCKDOWN
Default 0
Availability MSHTML.DLL version 7.00 and higher

This is an internal feature control, read by MSHTML.

Feature KB890923_ANCHORCLICKBEHAVIOR_POPUP_FIX
Default 1 for EXPLORER.EXE and IEXPLORE.EXE;
0 otherwise
Availability IEPEERS.DLL version 6.00 from Windows Server 2003 SP1, and higher

This is an internal feature control, read by IEPEERS.

Feature RETRY_HEADERONLYPOST_ONCONNECTIONRESET
Default 0
Availability WININET.DLL version 6.00 from Windows XP SP2, and higher

This is an internal feature control, read by WININET.

Feature SELECT_KEY_KB818614
Default 0
Availability MSHTML.DLL version 6.00 from Windows Server 2003 SP1, and higher

This is an internal feature control, read by MSHTML.