Posted by: Nishant Rana | September 9, 2008

(Service Unavailable) Could not load all ISAPI filters for site/service. Therefore startup aborted.

Hi,

After running the Sharepoint products and technologies configuration wizard successfully, the central administration site page opens up.

( We were installing MOSS 2007 on 64 bit machine)

But in my case it was giving the following error

“Service Unavailable”

Checking into event log gave the following information

Could not load all ISAPI filters for site/service. Therefore startup aborted.

and

ISAPI Filter ‘C:\WINDOWS\Microsoft.NET\Framework\v2.0.50727\aspnet_filter.dll’ could not be loaded due to a configuration problem. The current configuration only supports loading images built for a AMD64 processor architecture. The data field contains the error number. To learn more about this issue, including how to troubleshooting this kind of processor architecture mismatch error, see http://go.microsoft.com/fwlink/?LinkId=29349.

Searching for it the solution that I found was the following

// Disabling the 32bit mode for your web site.

cscript C:\inetpub\adminscripts\adsutil.vbs SET W3SVC/AppPools/Enable32bitAppOnWin64 0

and then the following

// Registering ASP.NET 2.0 as the default framework for that web site

C:\Windows\Microsoft.NET\Framework64\v2.0.50727>
aspnet_regiis.exe -i

This resolved the issue for us!!

Bye…


Responses

  1. what make this happen ??

    can you give explanation ??

    and it really help solved my problem.

    thanks any way.

  2. This helped me alot too. Thanks for posting the solution

  3. Thank you very very much, this atleast started the services on the 64bit machine that i am running.

  4. Thank you very very much. It help me a lot.

  5. Also a good link

    http://www.sugarbean.com/2009/06/copying-over-configuration-to-64bit-iis.html

  6. Hi
    when I perform second ins this error will apear:
    “The error indicates that IIS is in 64 bit mode, while this application is a 32 bit application and thus not compatible.”

  7. Excellent solution.Its works for me.Thanks a ton :)

  8. Worked great for me on my Exchange 2007 server with OWA! Thank you!

  9. You’re a savior. Customer installed some 32-bit software on a 64-bit server. After the offending software was removed and these steps were take they are back up and running.


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