In OneNote Options window, Advanced tab -> Text recognition in pictures group -> uncheck Disable text recognition in pictures. While you work offline, OneNote will warn you that it cannot sync the notebook In OneNote, File tab -> Options Item. Thank you for understanding If you temporarily disconnect from the Internet for any reason (for example, while traveling on an airplane), you can keep working offline in the cached (locally saved) copy of the notes on your Mac. OCR on OneNote Mac and iOS does not work As this is not user-friendly behavior in OneNote for Mac, we suggest you share the feedback or add the vote through the UserVoice via OCR on OneNote Mac does not work as the related team can take into consideration.