Office 365 upgrade from Office 2007, 2010, 2013, 2016 Scenario : Estate contains Office Professional Plus and Standard installations of 2007, 2010, 2013 and 2016. All version of Office suites must be removed leaving Visio and Project installation alone (i.e. 2007,2010, 2013, and 2016). The source files for Office 365 can be downloaded via the Click-To-Run URL here . This will download and extract two files (setup.exe and Configuration.xml). A download.xml and install.xml can be extrapolated from the accompanied configuration.xml; see below. “The Office 2016 Deployment Tool allows the administrator to customize and manage Office 2016 Click-to-Run deployments. This tool will help administrators to manage installations sources, product/language combinations, and deployment configuration options for Office Click-to-Run.” http://www.microsoft.com/en-us/download/details.aspx?id=36778 1.1 Download.xml The download.xml within the source files is kept ...