Your Mac Just Started Warning You About Apps That Will Stop Working

macOS Tahoe 26.4 started showing a warning you have probably never seen before. When you launch certain apps, a dialog box appears telling you that Rosetta 2 support will end in a future version of macOS and that the app will stop working. The translation layer that has quietly kept your old Intel apps running on Apple Silicon since 2020? Apple is pulling the plug. Rosetta 2 survives through macOS 27, then disappears entirely in macOS 28, expected in fall 2027.

So why should you care right now? Well, because the warning only fires when you actually open an Intel app. If you have a dozen Intel-only tools sitting in your Applications folder that you launch once a month, you might not see the popup for weeks. By then, you have less than a year to find replacements. I would rather know today which apps are living on borrowed time than get surprised next September.

How to Find Every Intel App on Your Mac

You could wait for the popups to trickle in one by one. Or you could pull the full list right now and deal with it on your terms. Here is the fastest way.

Open the Apple menu in the top-left corner of your screen, click About This Mac, then click More Info. In the About window that opens, click System Report. Scroll down to Software in the sidebar and click Applications. Give it a moment to load your full app list.

Now here is the move that saves you twenty minutes of scrolling: click the Kind column header. That sorts every installed app by architecture. Intel apps group together. Universal and Apple Silicon apps group together. You can see the entire problem in one glance.

Think about it. Some of these Intel apps might surprise you. I have seen people discover that their daily-driver PDF editor, their screenshot utility, or their menu bar calendar has been running through Rosetta this entire time without a single hiccup. That seamlessness is exactly why Rosetta 2 was so impressive, and exactly why its removal will catch people off guard.

What the Warning Actually Says

The dialog reads: "Rosetta enables a Mac with Apple silicon to run Intel-based apps. Support for Rosetta will end in a future version of macOS, so check with the app’s developer for an updated version." Short, direct, and a little ominous if you depend on the app it is flagging.

Apple does not specify which macOS version kills Rosetta in the popup. Based on Apple’s official deprecation timeline, Rosetta 2 will continue working through macOS 27 (arriving this fall) but will be removed in macOS 28 in fall 2027. There are two narrow exceptions: older gaming titles that never got Apple Silicon updates, and Intel binaries running inside Linux virtual machines, both of which Apple says will retain limited Rosetta support beyond macOS 27.

Here is a quick comparison of how different app architectures behave on Apple Silicon Macs running macOS Tahoe:

The Apps Most Likely Still Running on Intel

Five years after Apple Silicon launched, most major apps have gone Universal. But there are holdouts, and they tend to cluster in specific categories.

Audio production plugins. This is the biggest pain point. Plenty of VST and AU plugins from smaller developers still ship Intel-only binaries. If you run Logic Pro or GarageBand with third-party instruments, check every single plugin.

Legacy creative tools. Older versions of Adobe apps, niche vector editors, and specialized color grading tools that developers stopped updating years ago. They work fine today through Rosetta. They will not work at all in two years.

Utilities and menu bar apps. Small apps from solo developers who moved on. That clipboard manager you installed in 2021? The screen recorder a friend recommended? Check them.

Enterprise and scientific software. MATLAB, certain statistical analysis packages, and internal corporate tools are notorious for slow architecture transitions. If you use specialized software for work, check with your IT department now rather than on the day it breaks.

What to Do With Each Intel App You Find

For each Intel app on your list, you have three options. First, check if the developer already ships a Universal or Apple Silicon version. Go to the app’s website and look for the download page. Many developers released Universal updates months or years ago, but if you installed the app before the update shipped, your copy might still be the old Intel binary. Simply put, downloading a fresh copy often solves it.

Second, if the developer has not updated the app and is not planning to, find a replacement. For most categories, there are Apple Silicon-native alternatives. The macOS Tahoe 26.4 update itself brought several new built-in features that might replace a third-party tool you no longer need.

Third, if the app is truly irreplaceable and the developer is gone, consider your options carefully. You could keep a Mac running macOS 27 indefinitely without updating to macOS 28, which preserves Rosetta access. You could explore running the app inside a virtual machine. Or you could accept that this particular tool has reached the end of its road and migrate your data to something new. The sooner you start that migration, the less stressful it gets. Apple’s support page on using Intel-based apps confirms these architecture categories and how Get Info identifies them.

The Terminal Shortcut for Power Users

If you want a complete list of every Intel app without clicking through System Report, open Terminal and run:

system_profiler SPApplicationsDataType

That dumps every installed application with its architecture type. The output is long, but you can pipe it through grep to isolate Intel-only apps. For anyone comfortable with the command line, this takes about ten seconds and gives you a text list you can actually save and reference later. If Terminal is not your thing, the System Report GUI does the same job. Either way works.

There is one quirk worth knowing: some Universal apps include an "Open using Rosetta" checkbox in their Get Info window. If you enabled that toggle at some point (which was common advice for early Apple Silicon compatibility issues), the app might trigger the Rosetta warning even though a native version exists. Uncheck that box and re-launch the app. Problem solved.

How Much Time Do You Actually Have

More than you think, but less than feels comfortable. macOS 27 arrives after WWDC 2026 in June, with a public release in September. Rosetta 2 still works in macOS 27. The removal comes with macOS 28, which based on Apple’s annual cadence means September 2027. That gives you roughly eighteen months from today.

Eighteen months sounds generous until you realize some app migrations involve moving years of project files, relearning a new interface, or waiting for a developer to ship a native version that does not exist yet. If you work in audio production, video editing, or any field with complex plugin ecosystems, start auditing now. For everyone else, spending ten minutes in System Report this weekend saves you a potential headache next year.

macOS 27 will also drop Intel Mac support entirely, meaning only Apple Silicon Macs (M1 and later) will run it. If you are still on an Intel Mac, your upgrade path requires new hardware and new software. Check out every macOS recovery option available on your Mac before making any major changes to your system.

Apple spent five years making Rosetta 2 so good that people forgot it existed. That was the point. But forgetting it exists is exactly what makes its removal disruptive. The apps that break will be the ones you never thought about, because Rosetta made them invisible. Open System Report. Click the Kind column. Deal with it now while you still have time and options.