What you can do with MSI :
- create an installer which will install Win32 components on Win32 platforms
- create an installer which will install x64 and/or Win32 components on x64 
platforms
You can't however create a single MSI for both Win32 and x64 platforms.
Because a MSI must be specified as "for Win32" or "for x64".
The Win32 MSI will be installed on a x64 platform (but can install only Win32 
components).
The x64 MSI will NOT run on Win32 platforms.
You will have to create separate Win32 and x64 MSIs (at best, the x64 MSI can 
install both Win32 and x64 components).
Nothing to do with WiX - these are basic limitations of Windows Installer.


----- Original Message ----
From: OneReallyCoolApplication <[EMAIL PROTECTED]>
To: wix-users@lists.sourceforge.net
Sent: Monday, October 1, 2007 7:08:06 PM
Subject: [WiX-users] Explanation for why you can't have both a 32-bit and 
64-bit installer


I am supposed to create a MSI package using WiX that can detect whether the
computer it's on has 32-bit or 64-bit architecture, and install different
files for each. I have browsed Nabble and found replies that say making a
single installer that does this is impossible, such as these:

http://www.nabble.com/32-and-64-bit-installer-in-one-tf2635209.html
http://www.nabble.com/64-bit-newbie-question-tf3979370.html

However my boss is not satisfied with this explanation and wants a detailed
technical explanation of why WiX or Windows Installer cannot do this. Could
any of you give this explanation or perhaps suggest an alternative that I
could do? Any links to outside sources would be great, since I suspect my
boss doesn't trust Nabble much. Thanks in advance for your help. 
-- 
View this message in context: 
http://www.nabble.com/Explanation-for-why-you-can%27t-have-both-a-32-bit-and-64-bit-installer-tf4549274.html#a12982169
Sent from the wix-users mailing list archive at Nabble.com.


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