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error runing clasic ASP app on 64 bit windows - ?MDAC / Microsoft Assembly Cache problem?

Posted on 2008-11-19
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Last Modified: 2013-11-29
Hi,

I've just moved a client to a new server and they've gone onto Windows Server 2003 R2 64 bit , where they were previously on the 32 bit version.
One of their apps is a classic ASP web app and it no longer functions - it now throws up an error saying:

Microsoft VBScript runtime  error '800a01ad'

ActiveX component can't create object: 'OrganisOR_Biz.Runtime'

?, line 0

I've been told by someone else that this is because the app won't run on a 64 bit os as it needs the Microsoft Assembly Cache or MDAC (?) and this isn't available under the 64 bit version?
Does this make any sense to anyone and do they have any idea about what I can do about it? The client is not too pleased!
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Question by:uniteform
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by:jjardine
ID: 23001488
Have a look at this post on msdn  http://blogs.msdn.com/robgruen/archive/2005/05/26/422328.aspx    it discusses the issues with iis in a 64 bit environment calling 32 bit compiled com objects.   It appears that if you have the code for the com object and it is not vb6 then you could re-compile as a 64 bit com object and register it on the server.   VB6 doesn't have a 64bit compiler so that would be more difficult.   I hope the posting I referenced helps clear up the situation you are in.

Is there a way to make iis run in 32 bit mode on the 64 bit server?
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uniteform earned 0 total points
ID: 23003593
thanks jjardine but I already found the solution - and you're almost there - it is to run iis in 32 bit mode as there is no 64 bit mode for classic asp (1.1).
For anyone else searching here are some articles that explain the ins and out and what you need to do to make it work:
http://support.microsoft.com/default.aspx?scid=kb;en-us;894435

http://support.microsoft.com/?id=891314

good luck - it worked perfectly for me :0)
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