I need to remove Windows Server 2008 SP2, but cannot find the Service Pack for Windows KB948465 listing in the "View Installed Updates" part of appwiz.cpl.

http://technet.microsoft.com/en-us/library/dd351467%28WS.10%29.aspx#Uninstalling Uninstall Windows Server 2008 SP2 from the command line You can remove Windows Server 2008 SP2 from the command line by either specifying the path to the package that was used for installation (the path to the expanded .cab file), or by specifying the package identity (the package name). Option 1: Using the package that was used for installation Open an elevated Command Prompt window (click Start, type command in the Start Search box, right-click Command Prompt, and then click Run as administrator). Run the following command, assuming that Windows6.0-KB948465-NNN.exe is in the C:\temp folder: C:\temp\Windows6.0-KB948465-NNN.exe /x:C:\temp Where NNN is x86, x64, or ia64. To create a sandbox (a virtual environment), type: md <sandbox> To remove SP2, type: start /w pkgmgr.exe /m:c:\temp\Windows6.0-KB948465-NNN.cab /up /s:<sandbox> After Pkgmgr.exe completes, you will be prompted to restart the computer (unless you specified the /quiet option). Option 2: Using the package identity Open an elevated Command Prompt window (click Start, type command in the Start Search box, right-click Command Prompt, and then click Run as administrator). Run either of the following commands: Using the 5 language package: start /w pkgmgr /up /p:"VistaSP2-KB948465~31bf3856ad364e35~NNN~~6.0.0.QQQQQ" Using the package that contains all languages: start /w pkgmgr /up /p:"VistaSP2-KB948465~31bf3856ad364e35~NNN~~6.0.1.QQQQQ" Where NNN is x86, x64, or ia64 and QQQQQ is the build number.. After Pkgmgr.exe completes, you will be prompted to restart the computer (unless you specified the /quiet option). http://www.virmansec.com/blogs/skhairuddin

I've tried Option 2, to no avail. I wasn't the one that built this server, so I'm not sure what langpack was used. Also, where do I find the package identity? (QQQQQ)

I doubt the build which you are using 2008 was a full install with SP2 bundled, it is unlikely that SP2 can be removed.http://www.virmansec.com/blogs/skhairuddin