my one note is saying it can not sync because i am out of space. however when i check my storage i see that i have heaps left that i

If OneNote is indicating that it cannot sync due to storage issues, but you believe you have sufficient space, there are a few things to consider:

1. Check for Large Files: OneNote has a limit on the size of files that can be synced. If any of your sections exceed 50 MB, it may cause sync issues. You can check the size of your sections and try to reduce the size by moving large files elsewhere.
2. Sync Status: Ensure that your OneNote is properly synced. You can check the sync status by selecting View Sync Status in OneNote. If there are any errors, they will be displayed here.
3. Network Connection: Sometimes, a poor network connection can affect sync operations. Ensure that you have a stable internet connection.
4. Local Cache Issues: If you are using OneNote 2016 or OneNote for Windows 10, they maintain a local cache. If there are issues with this cache, it could affect syncing. Restarting OneNote or your device may help resolve these issues.
5. Account Authentication: Make sure you are signed in to your OneNote account. If your account is not authenticated, it can prevent syncing.

If the problem persists, consider checking the Microsoft support resources for further troubleshooting steps.

References:

• OneNote error: "Content Not Yet Available"
• "0xE40200B4" and "0x800700DF" errors when you sync a notebook in OneNote

Hello, thank you for reaching out to Microsoft Q&A.[

Open an incognito tab and sign in with your Microsoft account here.

https://outlook.live.com/mail/0/options/accounts-category/storage

Expand Microsoft Storage and E-mail storage section.

Post a screenshot of the resulting dialog box.

Note -

With a Microsoft account you get 5GB of OneDrive cloud storage and 15GB o Outlook e-mail storage. If you exceed any one of the storage limits, you won't be able to save/sync your notes or send/receive emails normally.