Use the following solutions for the “This file is from a different version of OneNote” error. Try to open the file in your web browser Convert the file Change the ...

Fix OneNote can't connect to the server, Sync will resume once we connect. You don't need to take any action. (0x803D0014 ...

When OneNote shows "Not Responding", it usually means the app is stuck during a task (syncing, loading a large notebook, ...