A family of Microsoft products that enable users to capture, organize, and reuse notes electronically.
Hi Ali_J97,
I go through the post carefully, may I know do you use OneDrive for Business with account assigned by your organization? If so, as you can see Note part from the link: “Exporting and importing notebooks through OneNote for the web is only available for notebooks stored on personal OneDrive accounts, not for notebooks stored on OneDrive for Business or SharePoint.” The option could not be available if you are using OneDrive for business.
As for sync error in OneNote, the reason is complicated if you meet sync error, it is better to split your large notebook into multiple ones to avoid sync delay. And there are sometimes if some sections get corrupted, they will get sync error and cannot be synced. Please check “Know your storage limit” part for more information: Best practices for syncing notes in OneNote (microsoft.com)
If you can see your notes from OneNote for the web, you may open the notebooks from OneNote 2016 and export them from the app. If you get issue when open notebook from the app, try creating new notebooks, copy sections from your previous notebook to the new one and check if you can open the new notebook from OneNote 2016. If you can, you may try spilt the notebook and export them in separates.
Best Regards,
Clark