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How to get OneNote to work on MacBook Air M1 running Tahoe 26.2

BODDEN POWELL JIMMY ASTER 5 Reputation points
2026-01-18T17:27:48.92+00:00

Onenote stopped working after updating to Tahoe 26.2

Microsoft 365 and Office | OneNote | For education | MacOS
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  1. kirbykirbyii 0 Reputation points
    2026-01-26T05:30:16.8833333+00:00

    I’m having the exact same issue, and unfortunately the suggested answer isn’t helpful in my case.

    I do not have a folder named com.microsoft.onenote in my ~/Library/Containers directory.

    In the OneNote desktop app, all of my notebooks are gone. The only way I can open any notebook is by going to the Backup location, where I see multiple copies of the same notebook with identical names.

    On OneNote Web, everything appears completely normal and up to date. However, working in the web version is not convenient for my workflow, and I really need the desktop app to function properly.

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  2. Anonymous
    2026-01-19T01:05:12.3366667+00:00

    Hi BODDEN POWELL JIMMY ASTER

    Thank you for reaching out to Microsoft Q&A Forum and sharing your experience.

    I understand that OneNote has stopped functioning on your MacBook Air M1 after updating to the latest macOS (Tahoe 26.2).

    Before attempting any repairs on the device, please check if you can still access your notebooks online at https://onenote.cloud.microsoft/ and ensure your data is synced.

    To better understand the problem:

    • Could you please clarify what you mean by "stopped working"? Does the app crash immediately upon opening or does it freeze?
    • Is there a specific error code or message appearing?
    • Are you able to open Word, Excel, or PowerPoint, or are they failing as well?
    • Which version number of the Office apps do you currently have installed?

    Meanwhile, please consider attempting these checks:

    New macOS versions often require the latest build of Office to function correctly. Please ensure Office apps are updated via Help > Check for Updates.

    Corrupted cache files may cause crashes after a major OS update. You can try clearing the OneNote cache manually:

    • Quit all Office applications completely.
    • Open Finder, then press Shift + Command + G and paste the following path: ~/Library/Containers/com.microsoft.onenote/Data/Library/Caches
    • Move this folder to the Trash (do not empty the trash yet).
    • Restart your Mac, try opening OneNote, and sign in again. Make sure all notes are synced before doing this to avoid data loss.

    If the issue persists, try uninstalling the app and reinstalling OneNote version 16.105 or the latest compatible version via the Update History page: Update history for Office for Mac

    Please let me know how you get on, as your feedback is valuable to the community. 

    If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".

    Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.

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  3. AI answer

    2026-01-18T17:27:55.9633333+00:00

    If OneNote stopped working after updating to Tahoe 26.2 on your MacBook Air M1, you can try the following steps to resolve the issue:

    1. Quit all Office applications: Make sure to close OneNote and any other Office apps that might be running.
    2. Remove Office applications: Open Finder, go to Applications, and select all Microsoft 365 apps. Use Command + click to select them, then right-click and choose "Move to Trash".
    3. Delete specific folders: In Finder, click on "Go" in the menu bar, then select "Go to Folder" and enter ~/Library/Containers/. Delete the folders that start with com.microsoft. for Word, Excel, PowerPoint, Outlook, and OneNote. Also, check the Group Containers folder for any related folders and move them to Trash.
    4. Reinstall Office apps: Sign in with your Microsoft account at the Office website to reinstall the Office apps.

    These steps should help you get OneNote working again after the update.

    References:

    AI-generated content may be incorrect. Read our transparency notes for more information.

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