OneDrive
Upon starting a session, you can access your files from one of three cloud storage services: Dropbox, Google Drive, or OneDrive. Launch the application and select File > Open > This PC - to access the cloud drive of your choice. You must login with your cloud drive account. .
To Save your work, click File > Save > This PC.
If you are using Blender, you'll need to press the refresh button.
If no pop-up window appears, minimize the application window to find it.