I have installed Microsoft Office 2013 Preview directly from Microsoft webpage. That is no installer with it. For those who wanted to share the installer with friends or family, you may have no ways. Fortunately, the MSI installation format is now available on Microsoft Office 2013 Customer Preview. In simple, you can now download the office 2013 installer in your PC desktop and can install it anytime. In order to download the MSI installer, you need to log in with your Windows Live account or Microsoft account. Download the MSI installer and enjoy the brand new Microsoft Office 2013.