Additional Class Notebook-related features and issues within Microsoft Teams for Education
Hi Karen,
Sorry for the inconvenience caused at your end.
Per the description provided, we understand the images or files uploaded in the OneNote Class Notebook are not displaying the content when they are accessing in the OneNote for the web or Microsoft Teams (Microsoft Teams uses the Office Online UI and features).
We have received similar reports from the members in this community, also we can repro similar situation from our end. So, we refer to some internal resource and noticed this behavior is reported by other users to a related team.
In addition, we also noticed there is a related Service Incident TM238883: Service degradation: Some users may be unable to insert files in Class Notebook within Microsoft Teams, where we assume the situation you are encountering should also be related to it and currently related team is working on it.
Moreover, we also set the primary thread: My uploads to the assignments show up as blank spaces - Microsoft Community and request you subscribe to it for any further updates. Also, we are going to lock this thread where it will be easy to identify for other members who are facing similar problem.
At last, we can view the content of uploaded files in Class Notebooks via accessing them in OneNote application, so for meantime you can use it as a workaround.
Appreciate your understanding and stay safe! 😊
Best Regards,
Chitrahaas