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Is it possible to install Exchange 2003 on a 2008 Server?

I am trying to do this, but am facing all sorts of problems, such as the installer quitting before doing anything.

Just wanted to know that this was ok to do.

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up vote 3 down vote accepted

Exchange 2003 is not supported on Windows Server 2008. Even Exchange 2007 was not supported on Windows Server 2008 until Exchange 2007 SP1 came along.

See KB948680: Description of the Microsoft server applications that are supported on Windows Server 2008.

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Ah - I notice that Exchange 2007 is only available in 64bit... Not good if I've got Windows 2008 Server 32bit installed! So, am I right in thinking that if I've got 32bit version of 2008 installed, then I can't run any version of Exchange? – Brett Rigby Mar 7 '10 at 16:15
Yes and no. There is a 32-bit version of Exchange 2007, but Microsoft do not support anything but 64-bit for production deployments. The 32-bit version is good for testing purposes in a pre-production scenario. You can also use the 32-bit version to install the Exchange management functionality on 32-bit machines, even in a production environment, as long as the Exchange server/s are 64-bit. – ThatGraemeGuy Mar 7 '10 at 19:31
That's exactly what I want it for - I wanted to create a test environment but couldn't because of the 64 bit version of Exchange and the 32 bit version of Server 2008 that we have. Can I download that 32bit version from somewhere? I have all relevant licenses to cover it, but no media to install from. – Brett Rigby Mar 8 '10 at 8:14
SP1 here:…, and SP2 here:…. Both of these can be used to perform a clean installation of Exchange 2007. – ThatGraemeGuy Mar 8 '10 at 12:30
Great - many thanks! – Brett Rigby Mar 8 '10 at 16:12

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