This should sound obvious, but the first thing that needs to be done is to go on a cleaning spree and delete unwanted files to free up space - you'd be surprised at the amount of clutter that builds up over time. Once you start hitting 90 percent in terms of used storage, expect a steady stream of 'OneDrive Needs Your Attention' notifications.
Fill it up with some documents and photos, and you’re sure to run out of space in next to no time. OneDrive provides a measly 5GB of free cloud-storage space, which translates to pretty much nothing these days.
