File On Demand Functionality By default, the "File on Demand" function is enabled. This means that data is downloaded only when you try to access it. This can be problematic if you are disconnected from the network and want to access your files offline. macOS To download everything, you can either do this: Or in the app configuration: Windows To download all files on Windows: Click on the OneDrive icon in the bottom right and choose Help & Settings . In Sync and Backup , click on Advanced settings , and click on Download all files .