Adam Engst (TidBITS-Talk, MacRumors):

If you are still using Microsoft Office 2019 for Mac, it will stop working fully on 13 July 2026. Word, Excel, PowerPoint, and Outlook will enter “reduced functionality mode”—a euphemism meaning you can view and print documents but cannot edit, save, or create new ones. Microsoft’s documentation doesn’t clarify what this means for Outlook users.

Why is this happening? A security certificate expiration is forcing Office 2019 into read-only mode, though Microsoft acknowledges this only obliquely in the FAQ. Without a current certificate, the apps can’t confirm you have a legitimate license.

[…]

At least in this case, Apple didn’t push users of older systems to buy new hardware—it just quietly kept things working. […] In contrast, Microsoft is quietly changing its story.

Consumer Rights Wiki (Hacker News):

After Office 2019 for Mac reached end of support in October 2023, Microsoft assured customers their installed apps would “continue to function.” The July 13, 2026 conversion instead drops the apps into a Microsoft-defined “reduced functionality mode,” in which files can be opened and viewed but not edited or saved. By May 30, 2026, the original 2023 end-of-support page had been re-dated and rewritten on Microsoft’s site; the “continue to function” clause was removed.

We thought the deal was that, if you purchase a perpetual license instead of subscribing, you don’t get feature upgrades but the apps keep working on the original hardware and OS version. Customers don’t like online license activation because it’s annoying and subject to temporary network or server problems. With smaller companies, there’s always the risk that they go out of business, and the server goes down, so you lose access to the app. (None of my apps use activation.) I didn’t expect that to be a danger for Mag 7 companies, but it turns out that Apple broke Mac App Store purchases for older OS versions (as well as movie and music purchases on newer hardware), and now Microsoft is letting its own activation break. I’m sure there’s something in the EULA that says they can end support, but it still feels like a violation of the social contract. The customer did their part by paying; it was the company that chose to impose the activation model in order to weed out cheaters; shouldn’t it then own any problems that creates?

But it’s actually worse than that because even subscribing to Office 365 doesn’t fix the problem. You need a newer version of Office, which necessitates a newer version of macOS, which may necessitate getting a new Mac—all to fix what seems like an artificial problem.

Amber Neely:

It’s also bricking its mobile apps on devices running iPadOS 16 and iOS 16 or earlier.

Previously:

• Logitech Certificate Expiration Breaks App
• SpamSieve 3.2.2
• Mac App Store Broken on macOS 10.14 and Earlier
• HomePod Late Adopter
• Apple Can Delete Purchased Movies From Your Library Without Telling You
• More Mac App Store Certificate Problems

Update (2026-06-03): Jason Snell:

Old software becomes incompatible. It’s a fact of life. But to build it so that it just suddenly stops working one day, and to take no steps to ameliorate that situation, is pretty disgusting.

Update (2026-06-05): Macworld (June 4, 2026):

Spend $29.97 today and pay $0 for Office on your Mac tomorrow (and forever)

[…]

For many people, the best software is the kind you buy once and keep using. Microsoft Office Home & Business 2019 offers the classic Office experience right on your Mac, letting you create documents, presentations, and spreadsheets without worrying about recurring charges. A lifetime license is currently available for $29.97.

Office 2019? Lifetime?

Nick Heer:

My workday began with a notification from Teams that the desktop app will stop working on 20 July, as Microsoft says it is only compatible with the three most recent versions of MacOS.

[…]

Also today, OneDrive automatically updated to a newer version, which is incompatible with the version of MacOS I am running. I received no warning until I tried launching it. Microsoft provides no support for this kind of problem for end users but, luckily, I had a Time Machine backup I could use. However, I realized OneDrive would probably automatically update and I would have to do all this all over again, and it contains no relevant preferences.

App Subscriptions iOS iOS 16 iOS App Mac Mac App macOS 10.14 Mojave Microsoft Excel Microsoft Office Microsoft Outlook Microsoft PowerPoint Microsoft Word Sunset

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