The “OneNote is cleaning up from last time it was open” message usually appears when Microsoft OneNote did not close properly during its previous session. This can happen after a system crash, forced shutdown, Windows update, or when OneNote becomes unresponsive and is closed abruptly. As a result, OneNote attempts to recover cached data when it is launched again.
In many cases, the message disappears after a few seconds and OneNote opens normally. However, for some users, the app gets stuck on this screen indefinitely, preventing access to notebooks and synced content. This can interrupt workflows and raise concerns about data loss.
Fixing the “OneNote is cleaning up from last time it was open” issue involves clearing corrupted cache files, resetting the app, and ensuring OneNote sync and system components are working correctly. The steps below explain how to resolve the issue safely without losing your notes.
How to Fix OneNote Is Cleaning Up from Last Time It Was Open
The methods in this section focus on repairing OneNote’s cache, app configuration, and sync behavior. Follow the steps carefully and reopen OneNote after each method to check whether the issue is resolved.
Restart the system where instructed so changes take effect properly.
1. Wait a Few Minutes and Do Not Force Close Immediately
OneNote may actually be repairing data.
- Launch OneNote.
- Wait at least 5 to 10 minutes.
- Check for disk activity indicating background processing.
- Allow OneNote to complete the cleanup process.
Large notebooks or sync interruptions can cause longer recovery times.
2. Restart OneNote and the Computer
Temporary app or system glitches can cause the message to loop.
- Close OneNote completely.
- Press Ctrl + Shift + Esc to open Task Manager.
- End all OneNote processes.
- Restart the computer.
- Open OneNote again.
A fresh system session often clears stuck background tasks.
3. Clear OneNote Cache Files
Corrupted cache files are a common cause of this issue.
- Close OneNote completely.
- Press Windows + R, type
%localappdata%, and press Enter. - Navigate to the Microsoft folder.
- Open the OneNote folder.
- Delete the Cache folder if present.
- Restart the computer.
- Open OneNote again.
OneNote will rebuild the cache automatically.
4. Reset the OneNote App (Microsoft Store Version)
Resetting fixes corrupted app data without removing notebooks.
- Open Settings.
- Go to Apps > Installed apps.
- Locate OneNote.
- Click the three-dot menu and select Advanced options.
- Click Reset.
- Confirm and restart the system.
This refreshes OneNote’s local configuration.
5. Sign Out and Sign Back Into OneNote
Account sync issues can trigger cleanup loops.
- Open OneNote if it launches.
- Go to Settings within OneNote.
- Sign out of your Microsoft account.
- Close OneNote.
- Restart the computer.
- Open OneNote and sign in again.
This forces a fresh notebook sync.
6. Check OneDrive Sync Status
OneNote relies heavily on OneDrive.
- Click the OneDrive icon in the system tray.
- Ensure OneDrive is running and fully synced.
- Resolve any sync errors shown.
- Restart OneNote after sync completes.
Sync conflicts can prevent OneNote from loading properly.
7. Repair Microsoft Office (Desktop Version)
If you are using OneNote from Microsoft 365.
- Open Settings.
- Go to Apps > Installed apps.
- Locate Microsoft 365 or Microsoft Office.
- Select Modify.
- Choose Quick Repair.
- Restart the system after repair completes.
Repairing Office restores OneNote components.
8. Update OneNote and Windows 11
Bugs causing cleanup loops are often fixed in updates.
- Open Microsoft Store.
- Go to Library.
- Update OneNote.
- Open Settings > Windows Update.
- Install all available Windows updates.
- Restart the system.
Keeping everything updated improves stability.
9. Open OneNote in Safe Mode (Desktop Version)
Safe Mode disables add-ins and customizations.
- Press Windows + R, type
onenote /safe, and press Enter. - Check if OneNote opens normally.
- If it does, disable add-ins or custom features.
This helps identify configuration conflicts.
Final Thoughts
The “OneNote is cleaning up from last time it was open” message usually appears due to improper shutdowns, corrupted cache files, or OneDrive sync issues rather than data loss. In most cases, your notebooks are safe and stored securely in the cloud.
