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How to Restore OneNote Notebooks from .one Backup Files
Question details
The user needs to recover deleted OneNote notebooks using local .one backup files and upload them back to OneDrive.
- Product
- Microsoft OneNote
- Device & OS
- not provided
- Scenario
- Recovering deleted notebooks from local backup folders containing .one section files.
- Observed behavior
- The user wants to successfully open the backed-up .one files as a complete notebook structure and sync it to their OneDrive account.
Locate the backup folder on your computer that contains your .one section files, and ensure you have the desktop version of OneNote installed.
Restore Using a New Local Notebook Folder
Recreate the notebook structure by generating a new index file and moving your backup files into it.
A OneNote notebook requires a .onetoc2 file to serve as a table of contents. By creating a new local notebook first, you force OneNote to generate this necessary index file, allowing it to read your backup .one files correctly.
Open the OneNote desktop application, navigate to File > New, and create a new notebook saved to a local folder on your computer.
Open your system's File Explorer, locate your backed-up .one files, and copy them directly into the newly created local notebook folder.
In the local notebook folder, double-click the .onetoc2 file. This will prompt OneNote to open the entire folder as a cohesive notebook.
Once the notebook opens correctly and all sections are visible, go to File > Share in OneNote and select your OneDrive account to move and sync the restored notebook.
Looking for a Reliable Alternative to Microsoft Office?
While WPS Office does not natively support OneNote-specific .one files, it serves as a powerful, lightweight, and free alternative for the broader Microsoft Office suite, offering seamless transition and formatting compatibility.
- 1. Download the Installer: Visit the official WPS Office website and download the setup file for your operating system.
- 2. Install the Suite: Run the installer and follow the quick setup wizard to install the software on your device.
- 3. Start Creating: Open WPS Writer, Spreadsheet, or Presentation and enjoy full compatibility with your existing Microsoft Office files.
Frequently Asked Questions
What is a .onetoc2 file and why is it needed?
A .onetoc2 file acts as a table of contents or index for your OneNote notebook. It tells the OneNote application how to properly organize the individual .one section files into a unified notebook structure.
Can I open .one files directly without creating a .onetoc2 file first?
Yes, you can double-click a single .one file to open it in OneNote as an isolated section. However, generating a .onetoc2 file by creating a new local notebook is highly recommended if you want to restore and manage the entire notebook as a single entity.
Where does OneNote usually store its local backup files?
By default, OneNote for Windows stores local backups in the hidden AppData folder. You can typically find them by navigating to C:\Users\[YourUsername]\AppData\Local\Microsoft\OneNote\[Version]\Backup.
