Hi,
You may refer to the suggestions from the thread below which discusses the same and see if it helps.
http://answers.microsoft.com/en-us/office/forum/office\_2013\_release-onenote/quick-notes-wont-sync-to-folder/fe730230-8dd9-4003-8173-2c50fec2cdad
Note: Steps in the above thread applies to OneNote 2016 also.
Hope it helps. Try the suggestion and let us know the result at your earliest convenience.
Thank you.
Suggestion does not work. Even tried reloading Office 365. Didn't work. Also, this issue is stopping the backing up of the notebooks. That is how I discovered it. Went to backup the notebooks manually and recieved this error message:
"This section is from a later version of OneNote and is read-only. To continue editing you need to upgrade this section."
I found two notebooks that I hadn't touched since having Office 2007. Converted them, yet backup and Quick Note issues continues. I live by Onenote and not being able to backup
my notebooks is not good.