Support to Mac

Gopi G 0 Reputation points
2026-11-09T08:28:50.6966667+00:00

I have a M5 Macbook Air, My Excel 2019, stopped working. Whether one time purchase of MS office 2024 would solve my need. I am currently not in the position of subscribing office 365.

Thanks.

Microsoft 365 and Office | Install, redeem, activate | For home | MacOS
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  1. DaveM121 946.7K Reputation points Independent Advisor
    2026-11-09T09:03:56.23+00:00

    If your version of Office is a 2019 version, then the error you are seeing is caused by an update on the 13th of July, many people are seeing the exact same error, after that update, it is no longer possible to update the security certificated on that version of Office, your Office apps will go into Read Only mode, on the link below they provide full details on that update.

    https://support.microsoft.com/office/update-microsoft-365-or-office-on-your-macos-or-ios-device-f418ae5d-bb5f-4078-b3d9-9340f5dd084e

    If you purchase the Microsoft Office 2024 version, uninstall Office 2019 and then install the 2024 version that would resolve the problem for you.

    There are a couple of versions of Office 2024, what Office apps (Word, Excel...etc.) do you use?

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  2. AI answer

    2026-11-09T08:29:42.9566667+00:00

    A one-time purchase of Office Home 2024 for Mac should meet your Excel needs on an M5 MacBook Air, provided its macOS version is one of the three most recent versions supported by Microsoft.

    Office 2019 for Mac reached end of support in October 2023 and no longer receives security or software updates, so replacing it with Office 2024 is the appropriate supported option.^1^

    Which edition to buy

    • Office Home 2024 includes Word, Excel, PowerPoint, and OneNote. It is intended for home or school use.
    • Office Home & Business 2024 adds Outlook and permits business use.
    • Both are one-time purchases for one PC or Mac, not subscriptions.^2^

    If you only need Excel and the other standard apps for personal use, Office Home 2024 is sufficient.

    Office 2024 for Mac supports Intel and Apple silicon processors, including the processor family in your M5 Mac. It requires:

    • One of the three most recent macOS versions
    • 4 GB RAM
    • 10 GB available storage
    • Internet access for redemption, activation, updates, and periodic activation checks^3^

    A one-time purchase does not include future major-version upgrades or Microsoft 365 services. A later major Office release would need to be purchased separately.^2^

    Move from Office 2019 to Office 2024

    Microsoft states that the existing Office applications do not need to be uninstalled when upgrading from Office 2019:

    1. Purchase the Mac edition and associate or redeem it using your Microsoft account.
    2. Download and run Microsoft’s License Removal Tool to remove the old Office 2019 licence.
    3. Open Word, Excel, or another Office application.
    4. Sign in with the Microsoft account associated with the new Office 2024 purchase.
    5. In the application menu, select Help > Check for Updates and install all available updates.^1^

    If the applications are not installed afterward:

    1. Sign in to the Microsoft 365 Apps page using the account linked to Office 2024.
    2. Select Install apps.
    3. Open Finder > Downloads and double-click Microsoft Office installer.pkg.
    4. Complete the installer, open an Office application, and select Get Started to activate it.^4^

    Your existing Excel files are not removed by the Office 2019 end of support and can be opened with a supported Office product.^1^


    References

    1. End of support for Office 2019 for Mac
    2. Office 2024 and Office LTSC 2024 FAQ
    3. Office suites for individuals and families
    4. Download, install, or reinstall Microsoft 365 or Office 2024 on a PC or Mac
    AI-generated content may be incorrect. Read our transparency notes for more information.

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