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, ...

One reason your OneNote Notebook is unable to sync is that your Internet connection is poor. To confirm this, we need to check the bandwidth. You can do this by using one of the free Internet speed ...