Or if you know you have a busy note, remove any attachments (save to disk and then remove them from the OneNote note).Trial and error I’m afraid, remove pages until it works and the one removed before it starts working is the culprit.These are hard to find but if there are many large attachments these may be the cause.Or you may have a page that just makes the program hang.These stubborn ones may be too big - split them into several sections in OneNote.Note - There may be some sections that will not download Cancel the download, leave the web page open, go do something else, and try again later when Microsoft have stopped throttling. If the download appears to stop for more than 60 seconds then it probably will never complete. I downloaded section by section unless I knew the section was very small and then pulled a few at a time. I found that if you ask for too much at once it will never work. For OneNote that is 120 items per minute and 400 per hour as a maximum then Microsoft begins refusing requests.

Microsoft uses a process called throttling to limit how many requests for data a program can pull from their systems.

Install onenote on mac