Fix OneNote Cannot Open Notebooks on Phone, Tablet, or Laptop
Question details
The user is unable to open OneNote notebooks across multiple devices and is encountering account authentication errors and OneDrive 404 errors.

- Product
- Microsoft OneNote
- Device & OS
- not provided
- Scenario
- Attempting to open, access, or sync existing OneNote notebooks using the mobile, tablet, or desktop applications.
- Observed behavior
- The applications fail to open the notebooks, displaying authentication prompts and occasional OneDrive 404 errors, despite the notebooks sometimes remaining accessible via OneNote on the web.
Before diving into device-specific fixes, ensure you have a stable internet connection and log into OneNote on the web to confirm your notebooks still exist and are fully accessible.
Sign Out, Clear Credentials, and Sign Back In
Authentication glitches are a primary cause of cross-device syncing issues. Clearing old or corrupted credentials forces the application to re-authenticate properly.
When your Microsoft account password changes or the login token expires, OneNote may fail to sync silently or display access errors. Clearing cached credentials will resolve most of these conflicts.
Open the OneNote application on your affected device. Navigate to your account settings or tap your profile icon, and select 'Sign Out'.
Open the Windows Start menu, search for 'Credential Manager', and click on 'Windows Credentials'. Locate any entries starting with 'MicrosoftAccount' or 'OneDrive' and click 'Remove'.
On iOS, go to device Settings > OneNote and toggle 'Reset OneNote'. On Android, go to Settings > Apps > OneNote > Storage and tap 'Clear Data'.
Relaunch the OneNote application and enter your Microsoft account credentials to sign in and initiate a fresh synchronization of your notebooks.

Verify OneDrive Service Status and Storage Limits
Since OneNote relies entirely on OneDrive for cloud storage, any server outages or exceeded storage limits will prevent notebooks from opening or syncing.
Repair or Reinstall the OneNote Application
If clearing credentials and checking OneDrive yields no results, the application installation itself might be corrupted and requires a repair or complete reinstall.
Switch to WPS Office for Seamless Document Management
If you frequently encounter frustrating sync errors, 404 issues, and authentication loops with Microsoft Office tools, consider trying WPS Office. It provides a lightweight, unified workspace for your documents, spreadsheets, and presentations, featuring reliable cloud storage and cross-device synchronization without the steep subscription fees.

Frequently Asked Questions
Why does OneNote show a 404 error when opening a notebook?
A 404 error typically means the notebook file has been deleted, moved, or renamed in your OneDrive account, or your device is struggling to reach the Microsoft servers. Check the OneDrive web version to verify the file's current location and ensure it hasn't been moved to the recycle bin.
Can I access my OneNote notebooks offline if they won't sync?
If the notebooks were previously synced and cached on your specific device, you can still view and edit them offline. However, if you are setting up a new phone or tablet, or trying to open a notebook that hasn't fully downloaded yet, you need an active internet connection and proper authentication to open them.
How do I fix OneNote authentication errors on my Android or iOS phone?
To fix mobile authentication errors, completely sign out of the OneNote app, go to your phone's application settings to clear the app cache and storage data, and then sign back in. Updating the app to the latest version in your app store can also resolve lingering login bugs.
Will uninstalling OneNote on my tablet delete my saved notebooks?
No. Your notebooks are securely saved to your Microsoft OneDrive account in the cloud. Uninstalling the application on your phone, tablet, or laptop only removes the local application software and temporary cache. Your notes will reappear seamlessly once you reinstall the app and log back in.




