http://blogs.msdn.com/b/mstehle/archive/2009/05/21/fyi-unlike-exchange-2007-exchange-2010-will-not-ship-a-32-bit-version.aspxThe Exchange team announced that Exchange 2010 will not have a 32-bit version – not even for evaluations. The post focuses on mainly the non-developer related impact of this change. The key points for developers are: &gt; Applications that automateen-USTelligent Evolution Platform Developer Build (Build: 5.6.50428.7875)http://blogs.msdn.com/b/mstehle/archive/2009/05/21/fyi-unlike-exchange-2007-exchange-2010-will-not-ship-a-32-bit-version.aspx#9634202Thu, 21 May 2009 22:26:41 GMT91d46819-8472-40ad-a661-2c78acb4018c:9634202FYI: Unlike Exchange 2007, Exchange 2010 will *not* ship a 32-bit version | Microsoft Share Point<p>PingBack from <a rel="nofollow" target="_new" href="http://microsoft-sharepoint.simplynetdev.com/fyi-unlike-exchange-2007-exchange-2010-will-not-ship-a-32-bit-version/">http://microsoft-sharepoint.simplynetdev.com/fyi-unlike-exchange-2007-exchange-2010-will-not-ship-a-32-bit-version/</a></p> <img src="http://blogs.msdn.com/aggbug.aspx?PostID=9634202" width="1" height="1">