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My task: Upgrade and Exchange 2000 Server to Exchange 2003 Server. &nbsp;How can I roll it back if the upgrade fails? &nbsp;The upgrade is scheduled for tonight. &nbsp;The server is the public folders home server. &nbsp;
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My task: Upgrade and Exchange 2000 Server to Exchange 2003 Server.  How can I roll it back if the upgrade fails?  The upgrade is scheduled for tonight.  The server is the public folders home server.  

Roll back from a failed Exchange 2000 upgrade to Exchange 2003

Windows Server 2003 was based on Windows XP and was released in four editions: Web, Standard, Enterprise and Datacenter. It also had derivative versions for clusters, storage and Microsoft’s Small Business Server. Important upgrades included integrating Internet Information Services (IIS), improvements to Active Directory (AD) and Group Policy (GP), and the migration to Automated System Recovery (ASR).