When you share notebooks online, OneNote keeps them automatically synchronized and up-to-date. There may be times when you want or need to sync changes manually, though. For example, when you’ve made a lot of changes to a shared notebook and you want to make sure they’ve been uploaded to OneDrive or SharePoint before you shut down your computer.
To check sync status and sync manually, if necessary, do the following:
In any shared notebook, click File > Info > View Sync Status.
In the Shared Notebook Synchronization dialog box, examine the shared notebooks you’re currently connected to.
If a notebook appears out of sync, you can click Sync Now or Sync All to quickly upload your latest changes. Syncing also downloads any changes that other, authorized users may have made to the shared notebook since your last update.
If you’re having issues getting your notebooks to sync, you can troubleshoot sync errors.