Office Apps Crashing

Fix OneNote for iOS Crashing After an Update

Maira Mehtab Sep 21, 2026 869 views

Question details

Users are experiencing an issue where the Microsoft OneNote application repeatedly crashes upon launching or during use on iOS devices following a recent app update.

Product: Microsoft OneNote
Device & OS: iOS
Scenario: Attempting to use the OneNote mobile app immediately after installing the latest version from the App Store.
Observed behavior: The application crashes unexpectedly, often forcing the user to completely uninstall and reinstall the app to temporarily restore functionality.

Before you start

Ensure your iOS device has a stable internet connection and check the App Store to see if a newer patch update has already been released to fix this bug.

Solution 1Recommended

Reinstall the App and Submit Feedback

Since this crash is likely caused by a version-specific bug in the latest iOS release, reinstalling can act as a temporary workaround while you report the issue to Microsoft developers.

Uninstalling the app clears out potentially corrupted cache files that might have been caused during the update process. Reporting the bug directly to the product team helps speed up the release of a permanent fix.

Uninstall and Reinstall OneNote

Tap and hold the OneNote app icon on your iOS home screen, select 'Remove App', and confirm the deletion. Then, open the App Store, search for Microsoft OneNote, and reinstall the application.

Report via In-App Feedback

Once the app is reinstalled and temporarily functional, open OneNote, navigate to 'Settings', and tap 'Feedback' to send a detailed crash report to the product team.

Data Safety: As long as your previous notes were fully synced to OneDrive, you will not lose your data when you uninstall and reinstall the application.

Solution 2

Open a Support Ticket (Microsoft 365 Admins Only)

If you are managing Microsoft 365 for an organization and multiple users are experiencing this crash, you can escalate the issue through the admin center.

Free Microsoft Office alternative

Looking for a Stable Mobile Office Experience?

If standalone Microsoft Office apps are frequently crashing on your mobile device, consider switching to WPS Office. It provides a lightweight, all-in-one application for your documents, spreadsheets, presentations, and PDFs without the hassle of managing multiple heavy apps.

1. Download WPS Office: Search for WPS Office in the App Store and download the unified application to your iOS device.
2. Open Your Files: Launch WPS Office and easily import or open your existing documents directly within the app.
3. Enjoy Stable Productivity: Use the built-in tools to read, edit, and manage your notes and documents without interruption.

Highly compatible with Microsoft Word, Excel, and PowerPoint formats.All-in-one app design saves valuable storage space on your iOS device.Built-in mobile productivity tools that run smoothly without frequent crashes.Free, lightweight, and easy-to-use alternative to heavy Microsoft 365 apps.

Frequently Asked Questions

Why does OneNote keep crashing on my iPhone after an update?

App crashes immediately following an update are usually caused by a coding bug in the new version or corrupted local cache files. Reinstalling the app or waiting for Microsoft to issue a patch are the most effective solutions.

Will I lose my notes if I uninstall OneNote to fix the crash?

No, your notes are safely backed up in the cloud as long as they were synced to your Microsoft OneDrive account prior to the crash. They will automatically restore when you reinstall the app and log back in.

How do I check if a new patch is available to fix the crashing issue?

Open the App Store on your iOS device, tap your profile icon at the top right, and swipe down to refresh the page. Look under the 'Available Updates' section to see if a newer version of OneNote has been released.

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