If you have tried to install the new Office 15 preview on Windows 8 Consumer Preview then you have more than likely been stopped by the small window telling you that you have to have the full version of Windows 8. Well for those of us who don’t want to wait that long all you need to do is run the installer in compatibility mode for Windows 7.

To run the installer in compatibility mode follow the screenshots of Office 15 Installation here

Thanks to eow for providing Microsoft Office 15 Installation on Windows 8

Better idea would to toss the CP & be running the RP. Office 2013 does just fine on the RP. One should or ought move from the CP to the RP anyway, regardless of Office anything.

I am running Office 2013 on Win8 RP quite nicely.

Get off the CP & use the RP. The RP has been available ever since 29/2/12

Cheers,
Drew

I installed Office 2013 alongside my Office 2010 without using any compatibility mode. I have to agree with Drew. A Clean install of Win 8 RP then an install of Office 2013 works just fine.

That's correct... there is no need for "Compatibility Mode", doesn't come into the picture @ all.

Cheers,
Drew