You're seeing this error because OneNote is trying to upload a page with more than 3.5MB of edits to a section file. The typical cause of this is an edit containing an embedded file or image greater than 3.5MB. This limitation will be fixed in the next...

You're seeing this error because OneNote is trying to download a Section file that contains more than 50MB of content. This typically happens when a section is modified in such a way that you need to re-download the entire section (i.e. Upgrade). This...