pkg file to start the installer, which will be much different from the Windows installer. The upgrade process on the Mac is similar in that you will follow the same procedure – go to the Office website, click on the area where is says Office 2016 is available, and then click “Install” to download the. Click “Yes” to continue and the installer should take care of the rest. User Account Control should pop up to ask you if you want the installer app to make changes to your computer. Click the setup executable, either from your browser or in your downloads folder.