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From "Michael McLeod" <>
Subject RE: ISAPI_REDIRECT on AMD Opteron x64
Date Tue, 02 Dec 2008 14:23:21 GMT

I have the same problem: I was trying to install propriety software which uses IIS and tomcat
onto a 64 bit windows server. I got the DLL (1.2.27) from
but this did not cure my problem.
I get the feeling that IIS is running 32 bit on a 64 bit machine, but I do not know how to
check this. I decided to move to 32 bit and I am still getting the same problem so have gone
back to my supplier.

Michael McLeod
ProtoCall One

-----Original Message-----
From: Alexander Diedler [] 
Sent: 02 December 2008 07:40
To: Tomcat Users List
Subject: ISAPI_REDIRECT on AMD Opteron x64

Hello everybody,
I have installed many, many servers with Windows 2003 R2 x64 and Intel CPUs and IIS and Tomcat
with ISAPI Connector and it works great.
But now I have a hosting server with an AMD Opteron Quad Core 1352 2 ,1Ghz CPU and installed
Windows 2003 Server R2 Standard. I make the same steps as on all other systems, but the event
 log said to me if I try to open a page in the IIS:
Source: W3SVC-WP
Type: error
Code : 2274
The ISAPI-Filter "C:\tomcat_connector\isapi_redirect.dll" doesn´t load through a configuration
problem. The current cpu architecture supports only x86-based configuration.
The ISAPI Filter in IIS show me the red arrow down =:o( But I have added the Virtual Directory
Jakarta to the website and point to the isapi_redirect.dll, add the Website extension to the
index files and in the Website-properties I added the DLL to the configuration dialog for
I have loaded the 64Bit ISAPIFilter AMD64 archtecture from the Tomcat Project Page.
Has anybody the same problem or any solution for me?

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