broken notebook, then after I moved to new notebook, error code 0xE000006A c6fem

This issue is usually caused by notebook or local sync‑cache corruption. Simply copying sections into new notebooks or resetting the app often does not fix it, and can spread the corruption. Below is the most reliable way to recover your notes and restore sync.

First thing you need to do is secure your notes (don’t rely on sync) - Just follow the below steps:

1. Install OneNote Desktop: https://www.onenote.com/download
2. Open it → File → Open → OneDrive
3. Open the affected notebook
4. If it opens:
   • Go to File → Export
   • Export the entire notebook to a .onepkg file
   • If that fails, export section by section or copy page content into Word as a fallback

Please note that this step is critical. Do this before trying further fixes.

Now post this we need to clear the existing local cache as uninstalling or resetting the OneNote doesn't address this issue.

1. Close OneNote completely
2. Press Win + R and open:

%localappdata%\Microsoft\OneNote

1. Delete everything in that folder
2. Also check and delete (if present):

%localappdata%\Packages\Microsoft.Office.OneNote*

1. Restart the PC

This removes the cached notebook metadata that repeatedly forces notebooks into read‑only mode.

Post this create a new notebook to test the sync:

1. Open OneNote and sign in
2. Create one new notebook
3. Let it fully sync
4. Test by typing a note, closing the app, reopening it, and syncing again

Please make sure to Prefer importing the .onepkg file using OneNote Desktop. If you are copying manually, do it page by page, not entire sections at once. Sync frequently and stop immediately if errors return.

Always remember copying “broken” sections spreads the problem!!