If you use Veeam Backup for Microsoft 365 to back up your data, you should be aware that it may not be able to backup OneNote notebooks that are larger than 2 GB. This can be a problem if you have important information stored in your OneNote notebooks that needs to be backed up.
Here are some solutions to this problem:
- Reduce the size of the notebook by removing any unnecessary data or splitting it into multiple notebooks.
- Move the OneNote notebook out of SharePoint.
This is a known Microsoft limitation, for more information on restrictions and limitations in OneDrive and SharePoint, please visit the Microsoft support page at https://support.microsoft.com/en-us/office/restrictions-and-limitations-in-onedrive-and-sharepoint-64883a5d-228e-48f5-b3d2-eb39e07630fa#onenotenotebooks.