How to upgrade Exchange 2007 (rtm) to Exchange 2007 SP2

Can anyone give me the best practice method to upgrade an Exchange Server 2007 from RTM to SP2?   Server is as below.

Exchange 2007 (rtm) is running on a single Windows Server 2003 x64 DC / Lan.
Server is running Windows Server 2003 x64 with Service Pack 3.
Again Exchange and AD are both running on one server in this LAN.


I have tried installing Service Pack 1 for Exchange 2007 before and it has failed and I had to just reinstall the image of the original rtm backup.

Any recommendations would be appreciated.

cmsamfordAsked:
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Hilal1924Commented:
You Should be able to Upgrade to SP2 directly from Exchange RTM without any issues. Although the only known hiccup as far as Microsoft is concerned is that if you have MS Forefront Installed on your Exchange, you will either need to remove it or Stop all Forefront Services before starting the SP2 Setup. Following are Excerpts from MS Exchange SP2 release notes:
""If you install Exchange 2007 SP2 on a computer that is running the RTM version of Exchange 2007, all server roles are upgraded to Exchange 2007 SP2. You cannot choose which server roles you want to upgrade to Exchange 2007 SP2. ""
""Consider the following when you upgrade servers that are running the RTM version of Exchange 2007 together with Microsoft Forefront Security for Exchange Server. The original release (RTM) version of Forefront Security for Exchange Server is incompatible with Exchange 2007 SP2.

You must either remove Forefront Security for Exchange Server or upgrade it to a later version before you can upgrade to Exchange 2007 SP2. The Exchange 2007 SP2 Setup program does not pass prerequisites if the computer is running the RTM version of Forefront Security for Exchange Server.

If you are running the latest version of Forefront Security for Exchange Server, you must stop all Forefront services before you run the Exchange 2007 SP2 Setup program.""
Hilal
btw here are the SP2 SetUp pre-requisites:
http://technet.microsoft.com/en-us/library/aa996719(EXCHG.80).aspx
 
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Glen KnightCommented:
If you are having problems with the upgrade perhaps you could share any errors/event log entries with us so we can help you.
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