OneNote Gem Add-Ins

The List of Notebooks on OneDrive in OneNote

In Office OneNote, tap File -> Open. You can go to the list of notebooks.
 

An Error is Reported when Open A Notebook

In this notebook list, when click on a notebook to open it, will get an error:
 

We couldn't open that location. It might not exist or you might not have permission to open it.
Please contact the owner of notebook for more information.

 
Because of the long period of time, can't remember which notebook has been deleted, which can lead to confusion.
 

Confirm which Notebooks have been Deleted

The “Gem for OneNote” add-in provides the ability to view and identify which notebooks have been deleted.
In the Windows Start menu, find OneNote Gem -> “Gem for OneNote Fix Tools” and click Run it.
 
In the "Gem for OneNote Fix Tools", click on "General" -> "Open Online Notebook".
 

The Deleted Notebooks

When you right-click on the notebook, a right-click menu will pop up, and you can click the "Information" menu item.
In the pop-up Notebook Information window, you can see:
The notebook status is: Deleted Notebook