OneNote syncing issues both on device and on browser - I have tried everything from my end!

Hi, Sharon D-O

This doesn’t always mean storage is the problem. OneNote can also get stuck because the app is out of date, the saved sign-in info is stale, or one section/page in the notebook is damaged.

Besides the solutions provided by the Q&A Assist, here are some suggestions you can try:

First, make sure OneNote and Office are fully updated, because Microsoft still says to check updates first for sync problems. If you’re on Windows, it is recommended that you remove the saved MicrosoftOffice and MicrosoftAccount entries in Credential Manager, then reopen OneNote, because that step is usually mentioned when sync keeps failing and the sign-in info is stuck.

It is also suggested that you try a different updated browser and clear the browser cache, since browser-side issues can affect OneNote Online too.

If one notebook or section seems to be the problem, create a new notebook or new section and copy the pages into it, not move them, then sync again.

Thank you for your patience in reading, I hope this information has been helpful to you. 

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Try the following sequence to isolate and fix the sync problem after renewal:

1. Verify service status

• If notebooks are on OneDrive, check the Microsoft 365 Service Health / OneDrive status page for any outages, because OneNote sync depends on those services.
• If notebooks are on SharePoint (work/school), contact the tenant administrator to confirm there are no SharePoint or account issues.

2. Confirm the issue is not device‑specific

• In OneNote on Mac, copy the notebook URL:
  1. Open the OneNote desktop app.
  2. Select File > Info.
  3. Right‑click the URL under the affected notebook name and select Copy.
• Open a browser, paste the URL into the address bar, and press Enter to open the notebook in OneNote for the web.
• Wait for it to fully load and check whether recent changes appear there.
  • If the web version is also not syncing, the issue is with the account/service or notebook, not the Mac app.

3. Resolve possible account/authentication problems A subscription renewal often forces re‑authentication.

• In OneNote (any client) click the sync error banner near the top of the window if present. This forces a session refresh and may resume syncing.
• If prompted, sign in with the exact account that owns the subscription and the notebooks (Microsoft account or work/school account).
• Make sure the password is current, especially if it was changed around the time of renewal.
• If you use multiple accounts, ensure the notebook is opened under the correct one.

4. Test via OneNote for the web directly

• In a modern browser (Edge, Chrome, Safari, etc.), go to https://www.onenote.com and sign in with the same account used in the app.
• Confirm whether:
  • The notebooks appear at all.
  • You can open them and make a small test change.
  • The change saves without error.
• If you can edit and save in the browser but the Mac app still will not sync, the problem is local to the Mac client.

5. If you see error 0xE0000024 or repeated sign‑in prompts This indicates OneNote does not have valid account info.

• Click the sync error message to refresh the session and re‑enter credentials when prompted.
• If the notebook opens and syncs in OneNote for the web but not in the app:
  1. Close the OneNote app.
  2. In a browser, go to https://www.onedrive.com, sign in with the same account, and navigate to the folder where the notebook is stored.
  3. Click the notebook name to open it in the browser, then choose Open in OneNote to re‑bind it to the app.

6. If you are repeatedly asked to sign in on macOS/iOS

• Follow the “Additional Information for macOS and iOS users” guidance from the sync article (sign out of all accounts in OneNote, sign back in with the correct account, then manually sync the notebook if needed).

7. Important precaution

• While troubleshooting, avoid signing out and removing/reinstalling OneNote as a first step, because this can risk data loss if there are unsynced local changes.

If, after these steps, the notebook still will not sync in either the browser or the app, and OneDrive/SharePoint health is normal, the next step is escalation through Microsoft support with specific error codes (for example 0xE0000024, 0xE0000007, etc.) shown in OneNote’s sync status dialog (File > Info > View Sync Status), as those codes map to server‑side or permission issues that must be fixed on the service side.

References:

• Fix issues when you can't sync OneNote
• Some column from my OneNote completely disappeared while i was using it - Microsoft Q&A