The steps apply to the Desktop versions of OneNote. Right-click it and choose the Restore option.Switch to the View tab on the Ribbon menu.In addition, while viewing recently deleted notes, you can choose to restore the relevant sections of the pages by moving them back to their original notebook or to another location of your choice. The notebook is now deleted from your local machine. Click Delete in the context menu that appears. Once there, right-click the folder you want to delete. With this method, you can recover single pages or entire sections of notes, you recently deleted from your OneNote app. Open the OneNote Notebooks folder, which OneNote creates for notebook storage by default. The Microsoft OneNote app on Windows 11 and Windows 10 allows searching for backups on a notebook in OneDrive. That said, there’s a good chance of recovering your notes deleted from the OneNote app. However, if you’ve emptied it from the Trash also, recovering it can be difficult. Selecting 'Remove from List' simply removes it for a few seconds before it reappears. So, if you change your mind and would want to restore it, you can do it. I have a 'ghost entry' for a notebook in OneNote (for M365 on Windows) as follows: Must be a link to some file that existed 7 years ago or similar. In most cases, when you delete a OneNote Note, it’s moved to the trash section but not removed completely.

Onenote deleted notebook