A family of Microsoft products that enable users to capture, organize, and reuse notes electronically.
Hi Mickey,
Based on your description, you encounter the error message "Unsaved changes" in OneNote Online. I would like to suggest you check the following:
1. Check if the notebook is checked out by another user. If so, wait for checking it in.
2. Create a new notebook in OneNote Online and check if the issue occurs.
Besides, please provide the information below, so we can better understand your situation and help you.
1. Where do you store the notebook?
2. Does the issue occur to one specific notebook or all notebooks?
3. Detailed steps and related screenshots bout how you encounter the issue and error message.
Regards,
Yoga