Microsoft Office 2019 for Mac loses editing July 13

Starting in mid-July, Microsoft Office 2019 for Mac will lose its ability to edit, save, or create new documents, effectively becoming a read-only application suite for thousands of users. The change, set for July 13, 2026, stems from an expiring security certificate that validates the software's perpetual license, which Microsoft will not renew for the unsupported version.

The affected applications include Word, Excel, PowerPoint, Outlook, and OneNote. Once the certificate lapses, the software will enter what Microsoft terms "reduced functionality mode," allowing users only to open, view, and print existing files. This shift impacts not only Mac users but also those running Office 2019 on iPhones and iPads.

Microsoft ended mainstream support for Office 2019 for Mac on October 10, 2023. At that time, the company's support documentation stated the apps would continue to function. However, that language was quietly revised in May 2026. The updated guidance assures users their data will remain accessible but no longer promises full operational capability, a change that has frustrated some customers who purchased the software as a one-time license.