If you’re seeing the 0xE000002E error code, OneNote needs to refresh but can't do so automatically. This is typically a temporary issue and should resolve itself the next time a full sync occurs. If you don’t want to wait for the next automatic sync, you can force a full sync by pressing Shift+F9 while OneNote is running.
More help
If you’re still seeing this error message after performing a manual sync, please report this issue in the OneNote forums on Microsoft Answers so we can investigate the cause and find a solution.
