Upgrading from Small Business Server (SBS) 2003 to Exchange Server 2007

Find out why the 64-bit Exchange Server 2007 and 32-bit Windows Small Business Server (SBS) 2003 cannot run on the same system.

We are currently running Windows Small Business Server (SBS) 2003 R2 and plan to upgrade to Exchange Server 2007 SP1. What do you consider the necessary steps to perform this upgrade?
Exchange Server 2007 is not supported with the SBS 2003 system. In fact, it cannot even be installed on the same server, since Exchange Server 2007 wants to run on a 64-bit operating system and SBS 2003 runs only in 32-bit mode.

If you want to introduce Exchange Server 2007 into your network, you should consider investing in new hardware...

and installing SBS 2008, which includes Exchange Server 2007.

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This was last published in January 2009

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