Hi Bruno, and others!

In the end I was successfull.

In summaray, I've checked my config (from HOWTO) tripple and more,
but nothing. I've transfered my config on a test machine
and surprise, it works! But reinstalling the IIS on the original
machine was not an option.

And in last distress I've switched from configuring isapi_redirect
by MS Registry to configure by isapi_redirect.properties file.
And with the same settings it works :-)
Isapi_redirect Filter is installed only on the virtual web instance
and _not_ global.
May others find usefull tips in here, too.

Huge thanks to Bruno for his ideas.


> A few other things that just came to my mind:
> 1- Where I use the registry for the settings,
> I don't double the backslashes - just use (for instance) "D:\Tomcat\logs" etc.
> 2- IMHO, with the latest JKs it's better to clean the registry entries
> and use the isapi_redirect.properties configuration file,
> especially if you install it on a single site
> (http://tomcat.apache.org/connectors-doc/reference/iis.html
> "Using a properties file.." - this might also help debugging..
> 3- Try on different computers.. despite the procedure was correct,
> once I had to remove and add IIS again  to get everything to work.

-----Urspr√ľngliche Nachricht-----
Von: myrealbruno [mailto:[EMAIL PROTECTED] 
Gesendet: Mittwoch, 18. Juli 2007 12:52
An: Tomcat Users List
Betreff: Re: isapi_redirect from IIS5 to tomcat 5.5 brings HTTP 404 - 
isapi_redirect.dll not found

Hi Martin,

> As far as I can tell everything is ok in your setup -
> I tried to replicate the error you get without success.
> You might want to check the IIS logs, the file permissions
> on the isapi dll, check if the /jakarta alias on IIS has execute
> permissions, try to set it as a global filter.. what else?
> And as a last resort use one of the old versions installers
> and then upgrade the files afterwards - version 1.2.15 had an msi
> installer for instance:
> http://archive.apache.org/dist/tomcat/tomcat-connectors/jk/binaries/win32/jk-1.2.15/
> - this might work.

----- Original Message ----- 
From: "Kirst Martin Wolfgang" <[EMAIL PROTECTED]>
To: <users@tomcat.apache.org>
Sent: Monday, July 16, 2007 8:40 AM
Subject: isapi_redirect from IIS5 to tomcat 5.5 brings HTTP 404 - 
isapi_redirect.dll not found


I'm trying to use IIS v5.00.3700.1000 with Tomcat 5.5.17
using isapi_redirect 1.2.23 and AJP13. But in the end I always
see an error page from tomcat:
 HTTP Status 404 - /jakarta/isapi_redirect.dll
 The requested resource (/jakarta/isapi_redirect.dll) is not available
 Apache Tomcat/5.5.17

 OS: Windows 2000 SP4.
 JAVA: v 1.6.0_u1 (jdk from SUN)
 There are multiple IPs on this mashine for one ethernet card.
 One IP is mapped to DNS portoweb.portolancs.com (
 There are multiple web sites hosted on this IIS, each mapped &
 to one IP. The isapi_redirect.dll is only installed
 on this single IIS web site under properties -> isapi filters,
 that means _not global_ for all.

I was following this howto:
I googled around and found others with the same problem,
but no solution. I've checked all settings at least twice.
There was a hint, the the uri is mapped twice.
When reading the redirect-log.txt, it seems to be all fine,
mapping is working, AJP is working, but still an error page.

Whats wrong with this setup/configs?

My configs:

[HKEY_LOCAL_MACHINE\SOFTWARE\Apache Software Foundation\Jakarta Isapi


worker.list = portoweb
worker.portoweb.type = ajp13
worker.portoweb.host =
worker.portoweb.port = 8009

Best regards

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