Skip any options that do not seem to apply
OneNote – When Sections or Pages Not Syncing (Troubleshooting Steps)
Is OneNote failing to upload or download notes on your Windows PC? Connection issues, buggy sync settings, file corruption, and file corruption are likely reasons that could be causing OneNote to not sync on your PC.
You may receive an error code or message that can help you identify and resolve a specific OneNote sync problem. But that's not always the case, so you may need to try multiple solutions to get things right.
The instructions below should help you resolve sync issues on the Windows 10 and Microsoft 365 versions of OneNote. Feel free to skip over any issues that don't apply.