MacRumors article
Microsoft Office 2019 for Mac Will Soon Stop Letting You Edit Documents
https://www.macrumors.com/2026/06/02/microsoft-office-2019-for-mac-no-edit-documents/
Content partially translated and edited from Gemini 3.1 Flash Lite.
Microsoft will restrict the document editing function of Office 2019 for Mac starting July 13th. The company explained that this measure is due to the expiration of the digital certificate for the product.
The Office 2019 apps affected by this measure are Word, Excel, PowerPoint, Outlook, and OneNote. Once the certificate used to verify the licenses of these products expires, these apps will transition into what Microsoft calls "reduced functionality mode." This means that users will still be able to open, view, and print existing documents, but they will not be able to create, edit, or save documents. According to Microsoft, the same restrictions will apply to iPhone and iPad apps that cannot be updated.
Users of Microsoft 365 and Office 2021, which can receive updates, will not be affected. However, Microsoft ended support for Office 2019 on October 10th, 2023, and no updates have been provided for the product since then. Therefore, Office 2019 cannot be updated with a renewed certificate.
Microsoft has stated that reinstalling Office 2019 will not resolve this issue. Instead, they recommend using the free Microsoft 365 web apps, starting a paid Microsoft 365 subscription, or purchasing Office 2024 outright.
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Here is the link to the official support document.
macOS or iOS device updates for Microsoft 365 or Office
https://support.microsoft.com/ko-kr/office/f418ae5d-bb5f-4078-b3d9-9340f5dd084e
Starting July 13th, 2026, some users will be able to open and print files in Office apps (Word, Excel, PowerPoint, Outlook, or OneNote), but they will not be able to edit, save, or create new files in "reduced functionality mode." This issue occurs when Microsoft Office app support for previous operating systems or devices is no longer continued.
