Here are the steps you can take to troubleshoot and fix OneNote embedded file issue:

1. Check the permissions of the folder/file in which you are trying to open or embed the file. Make sure that they are accessible to the user from which you are trying to open/embed the file.


2. Change the name of the file. Remove special characters and rename the file to something simpler


3. Make sure you are running the latest version of OneNote. Run the Windows Update and check for latest updates.


4. If there is an issue with OneNote installation, repair/reinstall it.


5. Make sure the device meets the system requirements.


6. Check your internet connection. Make sure that you have a connection to your cloud storage and your device.


7. Check the file for any significant or strange changes. For example, if the file shows a different author name or date when you open it, this might indicate the file is corrupted in some way.