Office for Mac Issues

How to Restore a OneNote .one Backup File on Mac

Amos Gikunda Sep 30, 2026 869 views

Question details

The user needs to open and restore a .one backup file on a Mac to migrate a notebook from a former school account to a new personal account.

How to Restore a OneNote .one Backup File on Mac

Product: Microsoft OneNote for Mac
Device & OS: macOS
Scenario: Migrating OneNote notebooks to a new account using a locally saved .one backup file.
Observed behavior: OneNote for Mac does not allow users to open a .one backup file directly by double-clicking it.

Before you start

Ensure you have the latest version of OneNote for Mac installed and have the .one backup file saved locally on your Mac's internal drive.

Solution 1Recommended

Restore the .one File via Mac OneNote Preferences

Use this method to find the correct backup folder path on your Mac and restore the notebook directly within the macOS environment.

Because macOS sandboxing prevents direct file opening, OneNote requires backup files to be placed in a specific system folder to restore them. The exact folder path changes depending on your macOS version.

Access OneNote Preferences

Open OneNote on your Mac. Click on 'OneNote' in the top Apple menu bar, then select 'Preferences'.

Locate Backup Folder Path

Click on 'Backup'. This menu will reveal the current backup folder path specific to your active macOS version.

Move the Backup File

Open Finder, navigate to the exact folder path displayed in the Backup preferences, and copy or move your .one file into this specific folder.

Restore the Notebook

Return to OneNote and use the native restore backup feature to open the notebook, which can now be synced to your new Microsoft account.

Restore the .one File via Mac OneNote Preferences

Folder Location Tip: Always check Preferences to find the folder. Relying on the Preferences menu is the most reliable method, as the path often changes after macOS system updates.

Solution 2

Use OneNote 2016 on a Windows PC

If you have access to a Windows computer, this is a quick workaround for opening the file and transferring the notebook.

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Try WPS Office for a Seamless Mac Office Experience

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1. Download WPS Office: Visit the official WPS Office website and download the macOS installation package.
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3. Start Creating: Launch WPS Office and easily open, edit, or create your documents, spreadsheets, and presentations.

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Frequently Asked Questions

Why can't I double-click the .one file to open it on my Mac?

OneNote for Mac does not support opening local notebook files directly due to macOS file system restrictions and Microsoft's cloud-first synchronization approach. You must place the file in the designated backup folder first.

What if the backup folder path shown in older tutorials doesn't exist?

macOS updates frequently alter hidden system folder structures. Always open OneNote Preferences and click on Backup to view the current, exact folder path generated for your specific macOS version.

How do I move my restored school notebook to my personal account?

Once the backup is restored and opened in OneNote for Mac, create a brand-new notebook logged into your personal account. Then, right-click the sections in the restored school notebook and select 'Copy Section To...' to transfer them to your personal notebook.

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