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Uninstall & Reinstall Issues

How to Reinstall OneNote on Mac Without Losing Cloud Notebooks

Partner EditorPartner Editor Oct 7, 2026 869 views

Question details

The user wants to perform a clean reinstallation of OneNote on a Mac while ensuring that all cloud-stored notebooks are safely preserved and restored.

How to Reinstall OneNote on Mac Without Losing Cloud Notebooks
Product
Microsoft OneNote
Device & OS
Mac
Scenario
Fixing application issues or performing a clean reinstall of OneNote on macOS.
Observed behavior
The user needs a reliable sequence of steps to safely remove the application and synchronize all notebooks from the cloud upon reinstallation without data loss.
Before you start

Ensure you have the correct login credentials for your Microsoft account, and always verify that your most recent notes are visible on OneNote for the web before uninstalling the application.

Solution 1Recommended

Verify Cloud Sync and Reinstall OneNote

This is the safest method to ensure all your notes are properly backed up to the cloud before removing the application from your Mac.

Because OneNote for Mac does not natively support exporting notebooks to a local hard drive, relying on Microsoft's cloud synchronization is essential. Verifying your cloud data ensures you will not lose unsynced notes during the uninstallation process.

1
Verify cloud notebooks

Open a web browser and navigate to OneNote.com or OneNote for the web. Sign in with your Microsoft account and verify that every notebook, including your most recent edits, is available and up to date.

2
Uninstall OneNote

Quit the OneNote application completely on your Mac. Open the Applications folder, locate Microsoft OneNote, and drag the icon to the Trash.

3
Restart your Mac

Click the Apple menu in the top-left corner of your screen and select Restart. This helps clear out temporary application caches.

4
Reinstall the application

Open the Mac App Store or visit the official Microsoft website to download and install the latest version of OneNote for Mac.

5
Sign in and synchronize

Launch the newly installed OneNote app, sign in using the exact same Microsoft account you verified earlier, and leave the application open to allow all notebooks to fully synchronize.

Verify Cloud Sync and Reinstall OneNote
Crucial Step: Do not delete any local notebook data or cache files from your Mac until you have fully confirmed that the cloud copy holds all your latest notes on OneNote for the web.
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Frequently Asked Questions

Can I export a local backup of OneNote on a Mac?

Unlike the Windows version, OneNote for Mac does not have a native feature to export notebooks as local backup files. All synchronization and backups rely exclusively on Microsoft OneDrive.

What should I do if my notes aren't appearing on OneNote for the web?

If your recent notes are not visible on the web version, it means they have not successfully synced from your Mac yet. Do not uninstall the app. Check your internet connection and attempt to force a sync manually within the OneNote Mac app first.

Will I lose my notebooks if I just drag the OneNote app to the Trash?

No, deleting the application file from the Applications folder does not delete your cloud-stored notebooks. As long as your notes were fully synced to your Microsoft account beforehand, they will seamlessly restore once you reinstall the app and sign back in.