Hey guys,

Whenever I start to install MS Office 2007, I get the message;

Setup is unable to proceed due to the following error(s):
The 2007 Microsoft Office system does not support upgrading from a prerelease
version of the 2007 Microsoft Office system. You must first uninstall any prerelease
versions of the 2007 Microsoft Office System products and associated technologies.
Correct the issue(s) listed above and re-run setup.

Before Setup terminates. I have Windows Vista Home Premium and (as far as I know) only MS Office 2003 installed. I've searched my computer for any installed Office 2007 software but couldn't find any. Any suggestions?

Thanks for your time.

HI Bllipp,

Welcome to the PCHF,

I seem to have found 2 ways that might help the first is fairly quick and easy here and the second look slong and involved here. I hope these help, let us know how you get on

Thank you for your help so far.

Your solution worked, however another error has occurred - whenever I load the Office 2007 setup, a box comes up with "Microsoft Office Professional Edition 2003" (which was already on my system) and "Installation Error: File Not Found" which refers to an apprently missing SKU011.CAB file. It states "Original Installation Source Required" and asks me to find the file on a CD. If I click cancel, the whole installation of Office 2007 fails. The main problem is now that I cannot load any of my original Office 2003 programs - for example, trying to load Word results in the same "Installation error" message, and trying to load Outlook results in an error "Mapi32.dll is corrupt. Please reinstall Office 2003".

Help! It's like the computer is stuck half-way between installing 2007 and uninstalling 2003. But now I can't even load 2003. How do I point my computer to the SKU011 file??

Thanks again.

Hi Bllipp,

Try this.
> 1. With the error message on the screen (sku011.cab error), hit CTRL+ALT+DEL
> to get the task manager
> 2. Go to PROCESSES tab.
> 3. End the process of MSIEXEC.EXE under your user name. Please note there
> will be 2 MSIEXEC.EXE, one under system and one under your name or login name.
> End the process for the one which is under your user name or else there might
> be problems with the office.
let us know how you get on

Thanks so much - solution worked flawlessly!
Have a lovely, efficient an up-to-date machine.
Much appreciated :0)

Fantastic, glad to be of service. I'll mark this as resolved