My suggestion, for any Australian / New Zealand Education Customers, would be to ensure your own internal technical support teams are aware of the OneNote issues you are experiencing, and encourage them to reach out to their Microsoft
Education Account Manager, Microsoft Education Specialists, or Microsoft Technical Account Managers to ensure that your own issues are registered and eventually resolved as Microsoft adds additional resources and load balancing to cope with the rapid uptake
due to the Corona Virus lead remote learning.
This isn't just a sharepoint/education user issue. It is OneNote AUS wide. We have nothing to do with education, are a company with 4 users sharing notebooks and them not syncing with the errors and conditions described throughout this thread. We use OneNote
and the data is stored on OneDrive which is, AFAICT, the syncing mechanism.
I understand the education user base is fairly large and the recent surge in educational users has probably caused this issue (not blame, simply likely because the of huge demand not previously experienced).
My point is we need a fix for everyone, not just students and teachers