IIS Filter oddity on WIN 2003...

External Since: Oct 12, 2004 Posts: 2

Hello,

I have an IIS Filter that runs fine on all previous versions of IIS. However
I'm seeing a perplexing and annoying problem with a couple of intances
running on Win 2003 server.

When I install the Filter, I don't see a 'green arrow' on the Filter entry.
No problem there, however, when I restart IIS, on one instance I don't see a
green arrow, or red arrow. All I see is the same state (unknown) as I would
do when I newly configure a Filter.

On another instance I DO see a red-arrow. However, When I look in the system
event log there are NO failure messages that IIS could not load the filter.
Very odd.

Now the really odd part. I use a browser to access the application on IIS.
It works fine. When I look at the filter status, it's now a green arrow on
both system instances.

Now, can anyone suggest what would cause this behavior? I ask mainly because
I need to be able to, at the very least, document this idiosyncrasy, but I'm
not sure where to start as I don't see any logging messages explaining why
the status of the IIS before access to the application is so odd.

Any ideas?

-Thom

External Since: Aug 26, 2003 Posts: 392

In IIS6, isapi filters are loaded in the w3wp process, so you need to
launch this process in order for the filter to load. You can just browse
any ASP page and this will launch the w3wp process. Until you launch an
ASP page, the status of the filter will be show as unknown. Once you
launch the w3wp process (browse any asp page) , check the isapi filter tab,
and then the filter should show as loaded.

In IIS5, isapi filters are loaded in the w3svc process, which gets loaded
when you do an iisreset so the filters will show as loaded.

Hope this helps!

Thank you,

Jackie Jaynes [MSFT]
Microsoft IIS
JackieJa DeleteThis @online.microsoft.com

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