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Fix OneNote for Mac Crashing with EXC_BAD_INSTRUCTION Error
Question details
The user needs to resolve an issue where the OneNote desktop client consistently crashes with an EXC_BAD_INSTRUCTION error.
- Product
- Microsoft OneNote
- Device & OS
- macOS 14.5
- Scenario
- Attempting to open or use the OneNote application after updating to version 16.85.
- Observed behavior
- The application becomes unresponsive and crashes, displaying an EXC_BAD_INSTRUCTION error message, even after restarting the computer and reinstalling the app.
Verify that your recent notes are fully synced to OneDrive via the web version or your mobile device before uninstalling the application to prevent data loss.
Downgrade to a Stable Previous Version
Reverting to an earlier, stable build (like version 16.84) bypasses bugs introduced in recent updates.
Software updates occasionally introduce bugs that cause fatal crashes on specific macOS versions. Rolling back to the last known stable release is the most reliable workaround until the developers issue an official patch.
Open the Applications folder in Finder, locate Microsoft OneNote, and drag it to the Trash.
Visit the official Microsoft Office for Mac update history page and download the installer package for version 16.84 (released April 16, 2024).
Run the downloaded installer package. Once complete, launch OneNote and sign in to ensure the application opens without crashing.
Open OneNote, click 'Help' in the top menu bar, select 'Check for Updates', and uncheck the option to automatically keep Microsoft apps up to date.
Experience a Stable, Lightweight Office Suite on Mac
If Microsoft Office applications continue to experience crashes or freezing after updates, consider switching to WPS Office. It provides a highly stable, lightweight, and compatible alternative for all your document, spreadsheet, and presentation needs on macOS.
- 1. Download the Installer: Visit the WPS Office website and download the Mac version of the application.
- 2. Install the Application: Open the downloaded file and follow the on-screen instructions to install WPS Office on your Mac.
- 3. Open Your Files: Launch WPS Office and open your existing documents, spreadsheets, or presentations directly without worrying about formatting issues.
Frequently Asked Questions
What does the EXC_BAD_INSTRUCTION error mean on a Mac?
This error generally indicates that an application tried to execute an illegal or undefined instruction in its code. In the context of Office apps, it usually points to a software bug introduced in a recent update that makes the app incompatible with the operating system's current state.
Will I lose my notes if I uninstall OneNote for Mac?
If your notebooks are successfully synced to your Microsoft account (OneDrive), they are safely stored in the cloud and will reappear when you sign back in. However, any locally stored changes that haven't synced due to the crash might be lost.
How do I find the Microsoft Office for Mac update history?
You can find the complete list of previous installer links by searching for 'Update history for Office for Mac' on the official Microsoft Learn or Microsoft Support websites. This page contains direct download links for past versions.
