How to delete notebooks in OneNote that 'don't exist' but still show up

Hi Lynne Gillam,

Welcome to Microsoft Q&A.

Based on the message you're seeing — “Item does not exist. It may have been deleted by another user” — the most likely explanation is that these notebooks were already deleted or moved outside of OneNote (for example, from OneDrive), but OneNote still shows them due to cached links.

To remove them from the list in OneNote for Mac, try clearing the local cache:

1. Quit OneNote completely. 2. Open Finder, press Cmd + Shift + G, and go to:

~/Library/Containers/com.microsoft.onenote.mac/Data/Library/Application Support/Microsoft User Data/OneNote/

3. Look for folders related to the notebooks that are stuck and delete them.

4. Restart OneNote.

This should remove the ghost entries from your notebook list.

Let me know if it works or if you're still seeing them.

Best regards,

Thomas

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