This is fine if you’re just installing Office once on your primary PC, but it can pose an issue in terms of both bandwidth and time if you need to install Office on multiple PCs. This installer detects your system configuration and then downloads the correct Office installer files from Microsoft’s servers, ensuring that you always have the most up-to-date version of the productivity suite from the get-go.īut at nearly 3GB, the Office 2016 installation files are relatively large. When you install Office 2016 as part of your Office 365 subscription, you’ll first download a small installer application. Office 365 Tip: How to Download the Office Offline Installer