Before you install any Microsoft Office 2013 product, we recommend that you verify that your computer meets or exceeds the minimum system requirements for the product.
This article describes how to install Microsoft Office for Mac 2011 on your computer. Note: If you have previous versions of Office for Mac installed (example, 2008, 2004 and so on), you do not need to uninstall it. If you do not have DVD drive, see the...
Cause: When you install Office for Mac 2011, earlier versions of Office for Mac are not removed from your computer. Solution: Uninstall the earlier version of Office for Mac