About the Current State of OneNote 2010 in 2026
On June 15, 2010, Office 2010 was released. OneNote 2010 is released with a new UI.
OneNote 2010 uses the new .one file format, discarding the old file format of OneNote 2007.

OneNote 2010 uses the new .one file format, discarding the old file format of OneNote 2007.
- Start to support create online notebooks.
- Support to open notebooks in SharePoint Server.
- Add Headings.
- You can use password to protect section.
- Add "OneNote Linked Notes" feature to anchor Other software ( like IE, Word, PowerPoint ) position to OneNote, convenient to use OneNote for other documentation take comments and notes.
- Start have 32-bit and 64-bit version.
- .one file format is OneNote 2010 file format, it is not compatibility with OneNote 2007 file format. You use open the 2007 .one file with OneNote 2010, and upgrade them.
- Linked Notes
- Notebook History
- Notebook Recycle Bin
- Multilevel Subpages
- Math Equations
