How to get rid of old Onenote files in Onedrive

The notebook names on OneDrive Home appear to be stale entries, because opening them reports the items no longer exist. Home is an activity view, while Files shows stored folders and documents. Before cleaning, open your notebook in OneNote for the web and confirm its pages are synchronized. In desktop OneNote, right-click each obsolete notebook and choose Close This Notebook; closing removes it from the list but does not delete content. Then use OneDrive Files and search to locate old notebooks. Delete only a notebook you can identify as unused, and leave it in the OneDrive recycle bin until you verify the current notebook again. If search finds nothing, there may be no file to delete, so do not treat the Home card as stored data. Refresh OneDrive in a private browser session; if stale cards persist, send account details and screenshots to OneDrive support rather than deleting unrelated folders.