My words: It is recommended that you install and configure Office SharePoint Server 2007 on all of your front-end servers before you configure Office SharePoint Server 2007 services and create sites. If you want to build a minimal server farm configuration, and incrementally add front-end servers to expand the farm, you can install and configure Office SharePoint Server 2007 on a single front-end server and configure the front-end server as both a Web server and an application server. Regardless how many front-end servers you have in your server farm, you must have SQL Server running on at least one back-end database server before you install Office SharePoint Server 2007 on your front-end servers.

Run Officeserver.exe, on one of your front-end or application Server and you will be prompted by an error:

And after visiting the knowledge base article 962935 found here, to your surprise the workaround mentioned there applies only if you are upgrading from Windows Server 2008 RTM/SP1 to R2. But we have a fresh installation of Windows 2008 R2 and we never upgraded from a prior edition didn’t we or did we, well that doesn’t matter here as we already have a problem in front of us.

So what’s the error and how do we get past it and have a MOSS 2007 farm up and running on our newly installed Windows 2008 R2 Server.

Solution: Replace Updates with SP2

Things you will need:

• MOSS 2007 Installation [officeserver.exe] http://www.microsoft.com/downloads/details.aspx?FamilyId=3015FDE4-85F6-4CBC-812D-55701FBFB563&displaylang=en]
• MOSS 2007 SP2 Service Pack: http://www.microsoft.com/downloads/details.aspx?FamilyId=B7816D90-5FC6-4347-89B0-A80DEB27A082&displaylang=en
• WSS 3.0 SP2 Service Pack: http://www.microsoft.com/downloads/details.aspx?FamilyId=79BADA82-C13F-44C1-BDC1-D0447337051B&displaylang=en

After you have downloaded the above files or you already have those we can start the slip streaming process:

1. Create a folder that will hold our slip streamed installer. In my case I’ll call it C:\SP2007x64
2. Extract the install file into the SP2007x64 folder by executing/running the following command

OfficeServer.exe /extract:C:\SP2007x64
[Note: There is no space after /extract switch].

1. After the binaries are extracted, and if you have used the officeserverwithsp1.exe then go to the Updates folder and delete everything from it

1. Now we will extract both the Service Packs to the C:\SP2007x64\Updates folder in similar way we extracted the OfficeServer.exe

• officeserver2007sp2-kb953334-x86-fullfile-en-us.exe /extract:c:\SP2007x64\Updates
• wssv3sp2-kb953338-x86-fullfile-en-us.exe /extract:c:\SP2007x64\Updates

After the Service Packs are extracted, browse to the updates folder in my case C:\SP2007x64\Updates it will be filled with multiple install files.

As you are already in the Updates folder delete the wsssetup.dll as having both the srvsetup.dll & wsssetup.dll is not supported. Else only WSS SP2 will be installed.

So this is important delete wsssetup.dll from Updates folder.