Upgrading Exchange 2010 RTM to Exchange 2010 SP3

I had to Upgrade a SBS Small Business Server from Exchange 2010 RTM to Exchange 2010 Sp3

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Downloaded Exchange 2010 Sp3 Setup

Extracted it to “C:\Exch 2010 sp3”

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Taken a Full Bare metal backup for safety

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Browse command prompt to setup location

Skipping Setup.com /pl (no Exchange 2003 Exists)

Skipping Setup.com /preparealldomain (no child domain exists)

Preparing Schema

Setup.com /prepareschema

Preparing Root domain

Setup.com /preparedomain

Preparing AD

Setup.com /prepareAD

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Download and install –

Microsoft Office 2010 Filter Packs

http://www.microsoft.com/en-in/download/details.aspx?id=17062

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Make sure IIS 6 WMI Compatibility Role service is added to IIS

If not add it

Add Role Services for Webserver – IIS 6 WMI Compatibility

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Downloaded Hot fix and installed it

Error:
Setup cannot continue with the upgrade because the ‘SMEX_SystemWatcher’ () process (ID: 748) has open files. Close the process and restart Setup.
Click here for help… http://technet.microsoft.com/en-US/library/ms.exch.err.default(EXCHG.141).aspx?v=14.3.123.3&e=ms.exch.err.Ex28883C&l=0&cl=cp

Warning:
Install hotfix Microsoft Knowledge Base article 2550886 from http://support.microsoft.com/kb/2550886 to improve Windows Failover Cluster transient communication instability when deploying stretched Database Availability Groups across datacenters.

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Disabled all Trend Micros Services

Rebooted the server

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Now run the setup again

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SP3 upgraded successfully