So, we have Exchange 2010 SP1 Beta available for download. When running an Exchange Setup there are 4 possible options/modes: 

• New Install – For installing a new role or adding a role to an existing installation
• Uninstall – For removing the Exchange installation or removing a single role from an existing installation
• Upgrade – When there is an existing installation and you are installing the new version. (Ex: SP1 Installation)
• Disaster Recovery – When you need to recover data with the /recoverserver switch.

So as mentioned above when you run Setup on your existing Installation, you get the option to Upgrade.

During the course of Readiness Checks, you might get an error for a Windows Server 2008 R2 hotfix [Update for Rights Management Services Client for Windows Server 2008 x64 Edition (KB979099)] that was released in Feb 2010.

Download the hotfix from http://www.microsoft.com/downloads/details.aspx?FamilyId=801b5bf1-29ac-49ad-bf51-505028a3fe38&displaylang=en [For more Information on the hotfix click here http://support.microsoft.com/?kbid=979099]

Apart from that if you have CAS role installed you might also be prompted for a hotfix rollup on .NET 3.5 SP1 for Windows Server 2008 R2 that was made available in March 2010.

Download the hotfix from: http://code.msdn.microsoft.com/KB981001/Release/ProjectReleases.aspx?ReleaseId=4005 [More information on hotfix click here http://support.microsoft.com/?kbid=981001]

Once these 2 tasks are completed the installation would now get into final stages of Upgrade …. and you are done…!

You should be on Version 14.1 (Build 180.2)

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