The Windows 10 OneNote app will soon be the only desktop version of OneNote. Microsoft will not be bundling OneNote with Office starting with Office 2019. The procedure for storing notebooks off the local hard drive was never well understood or publicized in part because OneNote's interface was a moving target.
Here's the simple scoop: The easiest way to keep your notebooks on OneDrive is to use the web interface for OneDrive to create them there in the first place. Simply drill down to the folder where you want to store the notebook, right click and select New... OneNote notebook. Then open the OneNote app and click ... More Notebooks, select the new notebook and open.
To move and existing notebook, follow these steps:
- Close the notebook in the OneNote app, and close the app.
- If the notebook is on your local machine, upload it to the OneDrive folder where you want to store it using OneDrive's web interface, and then open it using OneNote Online.
- If the notebook is already on OneDrive, use the OneDrive web interface to move it to the folder where you want to store it, and then open it in OneNote Online
- Start the OneNote app, click ... More Notebooks, select the moved Notebook and open.