Notebooks Backup in OneNote is no longer working

First you should double check that you're viewing the correct backup location -- the default for me is C:\Users\UserName\AppData\Local\Microsoft\OneNote\16.0\Backup\NoteBook. Did you modify the default location?

That build is from June -- have you tried updating to the latest?

I've grabbed that build and I'll try to reproduce the issue tomorrow. I was unable to do so with the latest version, so updating would be my first recommendation.

Hi Harsha,

Thank you for your suggestions. I just performed a Quick Repair and Full Online Repair, and that still does not fix the issue.

After reinstalling, I tried changing the backup folder, I tried manually initiate backup by pressing 'Back Up Changed Files Now" and "Back Up All Notebooks Now", I always have the message "The backup completed successfully" right after clicking, but there is no backup at all.

My notebooks are done syncing, and the latest backup is from 2 months ago if I believe last modified stamp.

Any other thoughts?

Hi,

Let us repair Office from the control panel and check.

https://support.office.com/en-US/Article/Repair-an-Office-application-7821d4b6-7c1d-4205-aa0e-a6b40c5bb88b

And let us make sure that the OneNote is not syncing when backing up the folders.

Hope this information helps you. Please let us know if you need additional information.

Thank you.