Open Notebook In Onenote 2016 For. OneNote Protocol click the current default app and then select preferred one. Once you do that the email will automatically be inserted into the OneNote notebook you selected.
I have also found a good user journey for them to get the notebook into their desktop client. Please note that the One Note Desktop is the most updated version of OneNote application. Clear local cache of OneNote 2016 and then test again.
Click or tap a notebook from the list.
However you can open it in OneNote 2016. Input the User B Account of OneNote Online into Type names or email addresses box. Again if you have both OneNote and PC versions OneNote 2016 may be an auto-open version. Click the Modify button.