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.
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Constant ULong COMPRESSED_CONTENT_RESPECTS_SSL_CACHING_SETTING = 1 //1=Enable,0=Disable Constant ULong FEATURE_ACTIVEX_REPURPOSEDETECTION = 1 //1=Enable,0=Disable Constant ULong FEATURE_ADDON_MANAGEMENT = 1 //1=Enable,0=Disable Constant ULong FEATURE_ALLOW_EXPANDURI_BYPASS = 1 Constant ULong FEATURE_BEHAVIORS = 1 Constant ULong FEATURE_BLOCK_INPUT_PROMPTS = 1 //1=Enable,0=Disable Constant ULong FEATURE_BLOCK_LMZ_IMG = 1 //1=Enable,0=Disable Constant ULong FEATURE_BLOCK_LMZ_OBJECT = 1 Constant ULong FEATURE_BLOCK_LMZ_SCRIPT = 1 Constant ULong FEATURE_BLOCK_SETCAPTURE_XDOMAIN = 1 Constant ULong FEATURE_BUFFERBREAKING_818408 = 0 Constant ULong FEATURE_CFSTR_INETURLW_DRAGDROP_FORMAT = 1 Constant ULong FEATURE_CLEANUP_AT_FLS = 0 Constant ULong FEATURE_CONSULT_MIME_KILLBIT_KB905915 = 1 Constant ULong FEATURE_CONTENT_ADVISOR_FRAME_ABOUT_BLANK_SSL_KB827259 = 0 Constant ULong FEATURE_CONVERT_A3A0INGB2312 = 1 Constant ULong FEATURE_CREATE_URL_MONIKER_DISABLE_LEGACY_COMPAT = 1 Constant ULong FEATURE_CrossDomain_Fix_KB867801 = 1 //1=Enable,0=Disable Constant ULong FEATURE_CSS_DATA_RESPECTS_XSS_ZONE_SETTING_KB912120 = 1 Constant ULong FEATURE_CUSTOM_IMAGE_MIME_TYPES_KB910561 = 0 Constant ULong FEATURE_DELETE_ABORTED_COMPRESSED_FILES_KB834224 = 0 Constant ULong FEATURE_DIGEST_NO_EXTRAS_IN_URI = 0 Constant ULong FEATURE_DISABLE_LEGACY_COMPRESSION = 1 Constant ULong FEATURE_DISABLE_MK_PROTOCOL = 1 Constant ULong FEATURE_DISABLE_NAVIGATION_SOUNDS = 1 Constant ULong FEATURE_DISABLE_TELNET_PROTOCOL = 1 //1=Enable,0=Disable Constant ULong FEATURE_DISABLE_UNICODE_HANDLE_CLOSING_CALLBACK = 0 Constant ULong FEATURE_DISPLAY_NODE_ADVISE_KB833311 = 1 Constant ULong FEATURE_DOCTYPE_FOCUS_SCROLLBAR_KB838386 = 0 Constant ULong FEATURE_DOWNLOAD_PROMPT_META_CONTROL = 1 Constant ULong FEATURE_DRAGDROP_KB834707 = 1 Constant ULong FEATURE_ENABLE_ACTIVEX_INACTIVATE_MODE = 1 //1=Enable,0=Disable Constant ULong Feature_Enable_Compat_Logging = 0 Constant ULong FEATURE_Enable_IE_Compression = 0 Constant ULong FEATURE_Enable_MixContent_Goldbar = 0 Constant ULong FEATURE_ENABLE_SCRIPT_PASTE_URLACTION_IF_PROMPT = 1 //1=Enable,0=Disable Constant ULong FEATURE_ENHANCED_IMAGE_DRAGDROP_SECURITY_KB867282 = 1 //1=Enable,0=Disable Constant ULong FEATURE_FEEDS = 1 //1=Enable,0=Disable Constant ULong FEATURE_FORCE_ADDR_AND_STATUS = 1 //1=Enable,0=Disable Constant ULong FEATURE_GET_URL_DOM_FILEPATH_UNENCODED = 1 Constant ULong FEATURE_HIGH_CONTRAST_BACKGROUND_IMAGES = 0 Constant ULong FEATURE_HTTP_USERNAME_PASSWORD_DISABLE = 1 //1=Enable,0=Disable Constant ULong FEATURE_IE6_Default_Frame_Navigation_Behavior = 0 Constant ULong FEATURE_IEDDE_REGISTER_PROTOCOL = 0 Constant ULong FEATURE_IEDDE_REGISTER_URLECHO = 0 Constant ULong FEATURE_IGNORE_MAPPINGS_FOR_CREDPOLICY = 1 Constant ULong FEATURE_IGNORE_POLICIES_ZONEMAP_IF_ESC_ENABLED_KB918915 = 0 Constant ULong FEATURE_IGNORE_XML_PROLOG = 1 Constant ULong FEATURE_IMAGING_USE_ART = 0 Constant ULong FEATURE_INCLUDE_PORT_IN_SPN_KB908209 = 0 Constant ULong FEATURE_INTERNET_SHELL_FOLDERS = 1 Constant ULong FEATURE_LEGACY_DISPPARAMS = 1 //1=Enable,0=Disable Constant ULong FEATURE_LIMIT_MONIKERS = 1 Constant ULong FEATURE_LOCALMACHINE_LOCKDOWN = 1 //1=Enable,0=Disable Constant ULong FEATURE_MIME_HANDLING = 1 //1=Enable,0=Disable Constant ULong FEATURE_MIME_SNIFFING = 1 //1=Enable,0=Disable Constant ULong FEATURE_NO_FIEF_UI = 0 Constant ULong FEATURE_Not_Terminate_WorkerThread = 1 Constant ULong FEATURE_OBJECT_CACHING = 1 Constant ULong FEATURE_PAGINATION_REDUCTION_KB834158 = 0 Constant ULong FEATURE_PERFORMANCE_ISSUE_KB843268 = 0 Constant ULong FEATURE_PERMIT_CACHE_FOR_AUTHENTICATED_FTP_KB910274 = 0 Constant ULong FEATURE_PRIVATE_FONT_SETTING = 1 Constant ULong FEATURE_PROTOCOL_LOCKDOWN = 0 Constant ULong FEATURE_READ_ZONE_STRINGS_FROM_REGISTRY = 0 Constant ULong FEATURE_RESPECT_OBJECTSAFETY_POLICY_KB905547 = 0 Constant ULong FEATURE_RESTRICT_ACTIVEXINSTALL = 1 //1=Enable,0=Disable Constant ULong FEATURE_RESTRICT_CDL = 1 Constant ULong FEATURE_RESTRICT_FILEDOWNLOAD = 1 //1=Enable,0=Disable Constant ULong FEATURE_RESTRICT_RES_TO_LMZ = 1 //1=Enable,0=Disable Constant ULong FEATURE_RESTRICTED_ZONE_WHEN_FILE_NOT_FOUND = 0 Constant ULong FEATURE_SAFE_BINDTOOBJECT = 1 //1=Enable,0=Disable Constant ULong FEATURE_SANITIZE_DRAGDROP_DATA_KB867282 = 0 Constant ULong FEATURE_SCRIPTINITIATED_DRAGDROP_HITTEST_SECURITY_KB867282 = 1 //1=Enable,0=Disable Constant ULong FEATURE_SCRIPTINITIATED_DRAGDROP_RESPECTS_URLACTION_KB867282 = 1 //1=Enable,0=Disable Constant ULong FEATURE_SCRIPTINITIATED_DRAGDROP_SECURITY_KB867282 = 1 //1=Enable,0=Disable Constant ULong FEATURE_SCRIPTURL_MITIGATION = 1 //1=Enable,0=Disable Constant ULong FEATURE_SECURITYBAND = 1 //1=Enable,0=Disable Constant ULong FEATURE_SECURE_ANCHORCLICKBEHAVIOR_KB867282 = 1 //1=Enable,0=Disable Constant ULong FEATURE_SHIM_MSHELP_COMBINE = 1 //1=Enable,0=Disable Constant ULong FEATURE_SKIP_LEAK_CLEANUP_AT_SHUTDOWN_KB835183 = 0 Constant ULong FEATURE_SKIP_POST_RETRY_ON_INTERNETWRITEFILE_KB895954 = 0 Constant ULong FEATURE_SSLUX = 1 //1=Enable,0=Disable Constant ULong FEATURE_SUBDOWNLOAD_LOCKDOWN = 0 Constant ULong FEATURE_TABBED_BROWSING = 1 //1=Enable,0=Disable Constant ULong FEATURE_UNC_SAVEDFILECHECK = 1 //1=Enable,0=Disable Constant ULong FEATURE_USE_CNAME_FOR_SPN_KB911149 = 0 Constant ULong FEATURE_USE_WINDOWEDSELECTCONTROL = 0 Constant ULong FEATURE_VALIDATE_NAVIGATE_URL = 1 //1=Enable,0=Disable Constant String FEATURE_VALIDATE_URLHOSTNAME Constant ULong FEATURE_WARN_ON_SEC_CERT_REV_FAILED = 0 Constant ULong FEATURE_WEBOC_MOVESIZECHILD = 0 Constant ULong FEATURE_WEBOC_POPUPMANAGEMENT = 1 //1=Enable,0=Disable Constant ULong FEATURE_WINDOW_RESTRICTIONS = 1 //1=Enable,0=Disable Constant ULong FEATURE_XMLHTTP = 1 Constant ULong FEATURE_ZONE_ELEVATION = 1 //1=Enable,0=Disable Constant ULong IMAGING_EMF_USE_RCLFRAMESIZE_KB905299 = 0 Constant ULong KB895948_DISABLE_MAIL_SUBDOWNLOAD_LOCKDOWN = 0 Constant ULong KB890923_ANCHORCLICKBEHAVIOR_POPUP_FIX = 1 //1=Enable,0=Disable Constant ULong RETRY_HEADERONLYPOST_ONCONNECTIONRESET = 0 Constant ULong SELECT_KEY_KB818614 = 0 |
As with several other collections, the feature controls may appear in any of several branches. In order of decreasing precedence, these are:
- 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
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\FeatureControlHKEY_CURRENT_USER\Software\Policies\Microsoft\Internet Explorer\Main\FeatureControlHKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main\FeatureControlHKEY_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 6.0 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 7.0 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 6.0 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 7.0 and higher |
This is an internal feature control, read by MSHTML.
Feature | FEATURE_BEHAVIORS |
Default | 1 |
Availability | URLMON.DLL version 6.0 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:
- disabled for infopath.exe and msn6.exe;
- enabled for ehExtHost.exe, explorer.exe, iexplore.exe and wmplayer.exe;
- enabled for all other processes by a * entry.
Feature | FEATURE_BLOCK_INPUT_PROMPTS |
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 0x1B in the INTERNETFEATURELIST enumeration.
Feature | FEATURE_BLOCK_LMZ_IMG |
Default | 1 for EXPLORER.EXE and IEXPLORE.EXE;0 otherwise |
Availability | MSHTML.DLL version 7.0 and higher |
This is an internal feature control, read by MSHTML.
Feature | FEATURE_BLOCK_LMZ_OBJECT |
Default | 1 |
Availability | MSHTML.DLL version 7.0 and higher |
This is an internal feature control, read by MSHTML.
Feature | FEATURE_BLOCK_LMZ_SCRIPT |
Default | 1 |
Availability | MSHTML.DLL version 7.0 and higher |
This is an internal feature control, read by MSHTML.
Feature | FEATURE_BLOCK_SETCAPTURE_XDOMAIN |
Default | 1 |
Availability | MSHTML.DLL version 7.0 and higher |
This is an internal feature control, read by MSHTML.
Feature | FEATURE_BUFFERBREAKING_818408 |
Default | 0 |
Availability | WININET.DLL version 6.0 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 7.0 and higher;MSHTML.DLL version 7.0 and higher |
This is an internal feature control, read by IEFRAME and MSHTML.
Feature | FEATURE_CLEANUP_AT_FLS |
Default | 0 |
Availability | MSHTML.DLL version 7.0 and higher |
This is an internal feature control, read by MSHTML.
Feature | FEATURE_CONSULT_MIME_KILLBIT_KB905915 |
Default | 1 |
Availability | URLMON.DLL version 7.0 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 6.0 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 7.0 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 7.0 and higher |
This is an internal feature control, read by URLMON.
Feature | FEATURE_CrossDomain_Fix_KB867801 |
Default | 1 |
Availability | MSHTML.DLL version 6.0 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 7.0 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 7.0 and higher |
This is an internal feature control, read by MSHTML.
Feature | FEATURE_CUSTOM_IMAGE_MIME_TYPES_KB910561 |
Default | 0 |
Availability | MSHTML.DLL version 7.0 and higher |
This is an internal feature control, read by MSHTML.
Feature | FEATURE_DELETE_ABORTED_COMPRESSED_FILES_KB834224 |
Default | 0 |
Availability | URLMON.DLL version 6.0 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 7.0 and higher |
This is an internal feature control, read by WININET.
Feature | FEATURE_DISABLE_LEGACY_COMPRESSION |
Default | 1 |
Availability | URLMON.DLL version 7.0 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 6.0 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:
- disabled for SAPfewgsrv.exe, SAPGUI.exe, SAPGuiT.exe, SAPLgPad.exe, SAPLOGON.EXE and Scale_for_R3.exe;
- enabled for ehExtHost.exe, explorer.exe, iexplore.exe and wmplayer.exe;
- enabled for all other processes by a * entry.
Feature | FEATURE_DISABLE_NAVIGATION_SOUNDS |
Default | 0 |
Availability | URLMON.DLL version 7.0 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 7.0 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 7.0 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 6.0 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 6.0 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 6.0 from Windows XP SP2 and Windows Server 2003 SP1;IEFRAME.DLL version 7.0 and higher |
This is an internal feature control, read by SHDOCVW and IEFRAME.
Feature | FEATURE_DRAGDROP_KB834707 |
Default | 1 |
Availability | MSHTML.DLL version 6.0 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 7.0 and higher |
This is an internal feature control, read by MSHTML.
Feature | Feature_Enable_Compat_Logging |
Default | 0 |
Availability | IERTUTIL.DLL version 7.0 and higher |
This is an internal feature control, read by IERTUTIL.
Feature | FEATURE_Enable_IE_Compression |
Default | 0 |
Availability | URLMON.DLL version 6.0 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 7.0 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 7.0 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 6.0 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 7.0 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 7.0 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 6.0 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 7.0 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 6.0 from Windows XP SP2, and higher;WININET.DLL version 6.0 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 7.0 and higher |
This is an internal feature control, read by MSHTML.
Feature | FEATURE_IEDDE_REGISTER_PROTOCOL |
Default | 0 |
Availability | IEFRAME.DLL version 7.0 and higher |
This is an internal feature control, read by IEFRAME.
Feature | FEATURE_IEDDE_REGISTER_URLECHO |
Default | 0 |
Availability | IEFRAME.DLL version 7.0 and higher |
This is an internal feature control, read by IEFRAME.
Feature | FEATURE_IGNORE_MAPPINGS_FOR_CREDPOLICY |
Default | 1 |
Availability | WININET.DLL version 7.0 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 7.0 and higher |
This is an internal feature control, read by URLMON.
Feature | FEATURE_IGNORE_XML_PROLOG |
Default | 1 |
Availability | MSHTML.DLL version 7.0 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:
- msiexec.exe
Feature | FEATURE_IMAGING_USE_ART |
Default | 0 |
Availability | MSHTML.DLL version 7.0 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 7.0 and higher |
This is an internal feature control, read by WININET.
Feature | FEATURE_INTERNET_SHELL_FOLDERS |
Default | 1 |
Availability | IEFRAME.DLL version 7.0 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 7.0 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 7.0 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 6.0 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 6.0 from Windows XP SP2, and higher;WININET.DLL version 6.0 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 6.0 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 7.0 and higher |
This is an internal feature control, read by URLMON.
Feature | FEATURE_Not_Terminate_WorkerThread |
Default | 1 |
Availability | MSHTML.DLL version 7.0 and higher |
This is an internal feature control, read by MSHTML.
Feature | FEATURE_OBJECT_CACHING |
Default | 1 |
Availability | URLMON.DLL version 6.0 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:
- disabled for ehExtHost.exe;
- enabled for explorer.exe, iexplore.exe and wmplayer.exe.
Feature | FEATURE_PAGINATION_REDUCTION_KB834158 |
Default | 0 |
Availability | MSHTML.DLL version 6.0 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 6.0 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 7.0 and higher |
This is an internal feature control, read by WININET.
Feature | FEATURE_PRIVATE_FONT_SETTING |
Default | 1 |
Availability | MSHTML.DLL version 7.0 and higher |
This is an internal feature control, read by MSHTML.
Feature | FEATURE_PROTOCOL_LOCKDOWN |
Default | 0 |
Availability | URLMON.DLL version 6.0 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:
- disabled for explorer.exe and iexplore.exe;
- enabled for ehExtHost.exe and wmplayer.exe.
Feature | FEATURE_READ_ZONE_STRINGS_FROM_REGISTRY |
Default | 0 |
Availability | URLMON.DLL version 7.0 and higher |
This is an internal feature control, read by URLMON.
Feature | FEATURE_RESPECT_OBJECTSAFETY_POLICY_KB905547 |
Default | 0 |
Availability | URLMON.DLL version 7.0 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 6.0 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 7.0 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 6.0 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 7.0 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 7.0 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 6.0 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 6.0 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 6.0 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 6.0 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 6.0 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 7.0 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 6.0 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 6.0 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 6.0 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 7.0 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 6.0 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 7.0 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 7.0 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 6.0 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 7.0 and higher |
This is an internal feature control, read by WININET.
Feature | FEATURE_USE_WINDOWEDSELECTCONTROL |
Default | 0 |
Availability | MSHTML.DLL version 7.0 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 6.0 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 6.0 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 7.0 and higher |
This is an internal feature control, read by IEFRAME.
Feature | FEATURE_WEBOC_MOVESIZECHILD |
Default | 0 |
Availability | IEFRAME.DLL version 7.0 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 6.0 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 6.0 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 7.0 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 6.0 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 7.0 and higher |
This is an internal feature control, read by MSHTML.
Feature | KB325355_INCREASE_WEBFOLDER_MAXURLLENGTH_TO_260CHAR |
Default | |
Availability | IEPEERS.DLL version 6.0 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 7.0 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 6.0 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 6.0 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 6.0 from Windows Server 2003 SP1, and higher |
This is an internal feature control, read by MSHTML.
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