Downloading software from unofficial sources to save space carries heavy risks:
provides the necessary files for Volume License users to deploy Office 2016 securely. For those with a retail purchase, the best route is through Microsoft Support's upgrade guide Microsoft Office 2016 Highly Compressed 10mb
The short answer is . A standard installation of Microsoft Office 2016 —which includes Microsoft Word , Microsoft Excel , and Microsoft PowerPoint —typically requires 3GB to 4GB of disk space. Downloading software from unofficial sources to save space