OneNote can’t connect to the server; Sync will resume once we connect

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

How to Fix OneNote Not Responding, Freezing Issue?

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

Microsoft Really Wants You to Stop Using The Old OneNote

Microsoft is aggressively pushing users off older OneNote app by degrading its performance, slowing sync speeds starting June 2025. Legacy OneNote for Windows 10 reaches end of support in October 2025 ...
ExtremeTech

Microsoft Will Purposely Slow Down Its OneNote App on Windows 10 to Encourage Upgrades

Microsoft has announced that OneNote for Windows 10 will reach its end of support on October 14, 2025. Starting in June 2025, users of OneNote for Windows 10 will experience slower sync performance, ...