Hello
Just recently, I have been getting this error on some on my OneNote notebooks and while I can force a sync, the process takes an exceedingly long time and does resolve itself only to reappear later in the day.
I have tried to copy sections into a new notebook only to have the problem reoccur.
OneNote can't connect to the network. We'll try to sync your notes when the network is available. (Error code: 0xE000006B b6d09)
I can open the notebook via the web app but the sections that do not synchronize show an error.
I am sure that the network is not the issue.