ISAPI Filters Marked as Unknown Are Called before Filters with Priority

ID: Q237471

The information in this article applies to:

Microsoft Internet Information Server version 4.0

SUMMARY

ISAPI Filters that do not register with either High, Medium, or Low priority are marked as Unknown in the Microsoft Management Console (MMC). Filters marked as Unknown are called before all filters with any of the three priorities that have registered for the same notification.

MORE INFORMATION

The priority of the installed filters is a read-only metabase property. To find the priority of the installed filters, you can either use the MMC or one of the available metabase utilities. The three metabase priority properties are NotifyOrderLow, NotifyOrderMedium and NotifyOrderHigh, and are available in the following locations:

/LM/W3SVC/Filters/Filter
/LM/W3SVC/n/Filters/Filter

Where Filter is the name of the installed filter and n is the Web Server instance.

If two or more filters have the same priority and have registered for the same notification, the FilterLoadOrder determines which is called first. Note that Global Filters installed under the Master WWW Properties are called before a filter with the same priority installed under one of the Web Server instances.

Additional query words: mmc

Keywords :
Version : winnt:4.0
Platform : winnt
Issue type : kbhowto