Classic Microsoft: OneDrive is Microsoft's cloud storage and file-syncing solution that's baked directly into Windows. However, over time the tool has become increasingly annoying and troublesome, and now Redmond seems willing to make it more so by making OneDrive an opt-out feature.
The big picture: Microsoft really wants you to use Windows' Phone Link app. Once enabled, the fastest way to access it was through the taskbar's running processes menu. But now Windows is gearing up to integrate it directly into the Start Menu as a permanent sidebar feature.