The FilterLoadOrder property is a comma-delimited list, which specifies the order that filters are to be loaded, such as Filter1, Filter2, and so on.ISAPI filters can be configured only at the global level or the Web site level. If more than one ISAPI filter is registered for a given event, IIS notifies the filters that the event occurred. ISAPI filters execute in the following order:

  • Global filters are notified before site-level filters.

  • If priorities are specified in IIS Manager, high priority filters are notified first, then medium, then low.

  • If more than one ISAPI filter is declared the same general priority level, IIS uses the order in which the filters appear in the FilterLoadOrder property to resolve the tie.

Schema Attributes

Attribute Name


ADSI/WMI Data Type


ABO Data Type


Schema Default

Not specified.

Internal Default

Not specified.

Upper Bound

Not specified

Lower Bound

Not specified

Internal ID


Friendly ID


Property Attributes


User Type


Configurable Locations

You can configure this property at the following locations in the IIS metabase.

Metabase Path

IIS Admin Object Type





There are no flags for this property.


Client: Requires Windows XP Professional, Windows 2000 Professional, or Windows NT Workstation 4.0.

Server: Requires Windows Server 2003, Windows 2000 Server, or Windows NT Server 4.0.

Product: IIS

See Also