Dear User,
Thanks for writing back and updating with us. Apologies for the delay in the response.
As per the further updates, it’s strange that the problem happens only with the PDF files and I would like to request you to try the following steps and see whether there is any success:
Quit Office apps> Open the Control Pane> Programs> Turn Windows features on or off> Enable Microsoft XPS Document Writer, Microsoft Print to PDF> Click OK> Restart your device and open the OneNote Notebook to insert the PDF file as a printout to check the outcome.
If still the same problem happens, I would like to request you to perform Online Repair to the Office apps and check the outcome: Repair an Office application - Microsoft Support
If still there is no success, I would like to request you to check the behavior in the OneNote for the web and see the outcome:
Open your browser> Access https://portal.office.com> Enter your Office 365 account details> Click on the 9 dots at the top left> Click on the OneNote> Open any Notebook or create a new Notebook> Go to page and click on Insert tab> File> Insert File Printout and see the outcome.
If there is no problem with OneNote for the web, then I think you should go with complete uninstallation of the Office apps and re-install them:
Uninstall Office from a PC - Microsoft Support (Option 2)
Download and install or reinstall Microsoft 365 or Office 2021 on a PC or Mac - Microsoft Support
Note: After uninstalling the Office apps, please restart your PC and install the Office apps again.
After performing the above methods, please update with the results so that if the problem is not resolved, we will check internally and guide you further.
Appreciate your patience with us and have a wonderful day!!
Best Regards,
Sophia