How to Recover Lost OneNote Notes After Reinstallation
Question details
The user needs to recover Microsoft OneNote notebooks or pages that disappeared after the application was uninstalled and reinstalled.
- Product
- Microsoft OneNote
- Device & OS
- iPhone
- Scenario
- The user reinstalled the OneNote application, likely to troubleshoot an issue, and subsequently found that their notes were missing from the app.
- Observed behavior
- Previously available notes, notebooks, or pages are no longer visible in the OneNote interface after a fresh installation of the application.
Ensure you have the login credentials for the Microsoft account associated with your OneNote application, and do not delete any existing OneNote folders from your user profile.
Check OneDrive Web Version for Synchronized Notes
Verify if your missing notes were successfully synced to the cloud before the app was reinstalled.
If your device was connected to the internet and syncing properly before the reinstallation, your notes should be safely stored in your OneDrive account. Checking the web version allows you to bypass any local app synchronization errors.
Open a web browser and sign in to the official OneDrive website using the Microsoft account linked to your OneNote app.
Navigate to the 'Documents' folder or use the search bar to look for your specific OneNote notebooks.
Click on the notebook to open it in OneNote for the Web and check if your missing pages and sections are present and up to date.
Restore from Local PC Backup Folders
If you also used OneNote on a desktop computer, you may be able to retrieve the notes from a local Windows backup folder.
Preventative Measures for Unsynchronized Notes
Follow these steps to safely handle unsynchronized content before attempting to reinstall the application in the future.
Try WPS Office for Reliable Document and Note Management
If you are frustrated by sync errors or lost files in Microsoft Office applications, consider switching to WPS Office. It provides a highly compatible, lightweight, and stable environment for all your document needs, backed by reliable cloud storage.
- 1. Download and Install: Visit the official WPS Office website and download the installer for your PC, Mac, or mobile device.
- 2. Sign In to Enable Cloud Sync: Create or sign in to your WPS account to activate WPS Cloud, ensuring your documents are securely backed up automatically.
- 3. Import Your Documents: Open your existing Microsoft Office files directly in WPS Office. You can continue editing right where you left off.

Frequently Asked Questions
Why did my OneNote notes disappear after uninstalling the app?
When you uninstall OneNote from a mobile device like an iPhone, the local application cache is deleted. If your recent notes were not completely synchronized to OneDrive prior to uninstallation, those unsynchronized, locally stored notes are permanently erased.
Can I recover deleted OneNote files from an iPhone backup?
If you performed a full iCloud or iTunes backup of your iPhone before you uninstalled the OneNote app, you may be able to restore that entire backup to your device. This will revert your phone's state, potentially restoring the unsynchronized local app cache.
How do I force OneNote to sync on my mobile device?
You can manually force a sync on mobile devices by swiping down on the notebook list. If that fails, switching to a different Wi-Fi or cellular network often resolves connectivity-related sync errors.




