Microsoft to remotely cripple perpetually-licensed Office 2019/2021 for Mac in July

On July 13, 2026, a license-validation certificate baked into Microsoft Office for Mac and iOS will expire, forcing affected installs of Word, Excel, PowerPoint, Outlook, and OneNote into a ‘reduced functionality mode’ that permits viewing files but blocks editing and saving. Office 2021 for Mac users on macOS 12 or later can dodge the conversion by updating to build 16.83, but Office 2019 for Mac is capped below that build and has no fix — Microsoft’s own docs concede the issue cannot be resolved by updating or reinstalling. Windows and Android builds are unaffected.

The move directly contradicts Microsoft’s 2023 end-of-support notice, which assured Office 2019 for Mac buyers that ‘all your Office 2019 apps will continue to function.’ Sometime before May 30, 2026, that page was silently rewritten and re-dated to May 15, 2026, with the ‘continue to function’ language deleted and replaced by a pointer to paid Microsoft 365 products. Customers who paid roughly $150 for a product marketed explicitly as a ‘one-time purchase’ are being offered a free Microsoft 365 trial that requires a payment method and auto-converts to a subscription.

Critics, including consultancy JimmyTech and AppleInsider, note that certificates can be renewed and that using the expiry as a forced-retirement mechanism is a deliberate business choice rather than a technical necessity. Microsoft has issued no public reconciliation of the new behavior with its earlier promise, and community discussion is already shifting toward LibreOffice, OnlyOffice, and Apple Pages as escape paths.