A family of Microsoft products that enable users to capture, organize, and reuse notes electronically.
You seem to talk about a local notebook, a notebook which is stored on your computer. Then this notebook is a folder in the Windows file system, filled with .one files, the so called sections.
If this is correct and you can recover this folder, including its content, then the correct method is:
- close the notebook in Onenote
- re-open the recovered notebook
Bernd