MS OneNote notes

Onenote 2016 compatibility issue with Onenote 2010:
https://answers.microsoft.com/en-us/office/forum/office_2016-onenote/onenote-2016-compatibility-issue-with-onenote-2010/bc5bb18b-3d40-4a23-ad58-6865cb98d206#:~:text=Onenote%20Notebook%20file%20%282010-16%20file%20format%29%20resides%20on,from%202013%29%20Computers%203-6%29%20Windows%207%20Onenote%202010

    Possible Solution:
        https://support.office.com/en-us/article/Troubleshoot-errors-in-OneNote-for-Windows-8-40976dfa-818f-4e5f-b8fb-b0fbb9bf785a

Convert a notebook to a different format:  
https://support.microsoft.com/en-us/office/convert-a-notebook-to-a-different-format-52e2f763-e138-4f6b-8de2-48362b6fe76a

Convert a notebook to a different format:
https://support.microsoft.com/en-us/office/convert-a-notebook-to-a-different-format-52e2f763-e138-4f6b-8de2-48362b6fe76a

Convert onenote 2007 to 2019? (also OneNote version description)
https://answers.microsoft.com/en-us/msoffice/forum/all/convert-onenote-2007-to-2019/1e1ed4e5-0bb9-4ab2-9920-4cc19f12aadf
"There is no OneNote 2019 , there is OneNote 2016 and OneNote for Windows 10. You will find more here: https://support.microsoft.com/en-gb/office/what-s-the-difference-between-the-onenote-versions-a624e692-b78b-4c09-b07f-46181958118f?ui=en-us&rs=en-gb&ad=gb"

How to locate your OneNote notebooks:
https://docs.microsoft.com/en-us/office/troubleshoot/onenote/locate-onenote-notebooks