The short version: after macOS 27, the things that stop opening are not whole Intel Macs—they are Intel-only apps on Apple silicon that never shipped a native build. An Intel Mac tops out at macOS 26 and cannot install Golden Gate at all. On M-series Macs, Rosetta still works in macOS 27. Starting with macOS 28, general-purpose Intel translation ends; Apple keeps a subset for older, unmaintained games that rely on Intel frameworks. Safari, Mail, and current Chrome / Office / chat apps are already Apple silicon or universal. You do not need a panic upgrade. You do need an inventory of old plugins, bank helpers, printer suites, and utilities that have not been updated in years.
For the OS calendar, see macOS 27 Golden Gate. This piece only answers two questions: which Intel software dies after 27, and what the Rosetta sunset means if you do not write code. Sources as of 17 September 2026: Apple Developer News (1 September 2026), Apple Support HT102527, and the macOS 27 Release Notes.
- Apple has confirmed: general Rosetta through macOS 27; from macOS 28, Intel-only apps do not run, except certain legacy games.
- Apple has confirmed: from macOS 26.4, launching a Rosetta app may show a “get an Apple silicon version” alert.
- Do not treat as fact: that a named bank, antivirus, or plugin is already dead on 27. The list is per Mac. Use Settings on your machine.
Split this first: Intel Mac vs Intel software
These get mashed into one headline. The decisions are not the same:
| What you have | What macOS 27 does | What you should do |
|---|---|---|
| Intel-processor Mac (most 2019 and earlier) | Cannot install Golden Gate; last OS is macOS 26 Tahoe | Apps can still run on 26. You lose future major OS updates. Plan an M-series Mac or a cloud node |
| Intel-only apps on an Apple silicon Mac | Still run via Rosetta on 27; general translation ends on 28 | Clear the list during the 27 window: native / universal builds, or replacements |
If you still sit on a 2019-or-older Intel MacBook Pro, iMac, or Mac mini, the story is not “software dies after 27.” It is “this computer no longer gets major releases.” Office and browsers can keep working while vendors still ship 26 patches. The risk is shrinking security updates, not Rosetta.
If you bought M1 through M6 from 2020 on, the Mac can take 27 and later 28. Then Rosetta matters: it translates apps, not the whole machine.
Apple’s timeline: what actually stops after 27
Apple shipped Rosetta 2 in 2020 so Intel apps could keep running on M-series Macs. WWDC 2025 said the transition was ending. On 1 September 2026 a developer note locked the dates:
- macOS 26.4 and later: opening a Rosetta-dependent app may prompt you to install an Apple silicon build.
- macOS 27 Golden Gate: the last major release with general-purpose Rosetta. Intel-only apps still run here.
- macOS 28 onward: Intel-only apps no longer run on Apple silicon. The exception is older, unmaintained games that rely on Intel frameworks.
“Won’t work after macOS 27” means after you leave 27 for 28, not “everything breaks the morning you install 27.” Treat 27 as the inventory year. That matches Apple’s wording.
The Release Notes also say the system will list the work: System Settings → General shows Intel software that will be incompatible with macOS 28.0, flags unused Intel programs, and may suggest a site for a native build. That page is more useful than any viral “dead app” list.
How to tell which apps on your Mac are Intel
Do not guess. Three steps usually finish in half an hour:
- Read the system list: System Settings → General, then the Intel / incompatible-with-macOS 28 list. That is Apple’s assignment.
- Read Activity Monitor: Activity Monitor → View → All Processes, then the Kind column. Apple means Apple silicon; Intel means Intel. A universal binary shows Apple when it is running native.
- Read Get Info: Control-click the app → Get Info. If “Open using Rosetta” was ever checked, part of it still goes through Intel, or you forced translation for an old plugin.
A Universal app carries both arm64 and x86_64. On M-series it runs native by default and still works after 28. The danger is an installer that says “Mac” but only ships an Intel slice, plus Intel plugins / helpers hanging off an otherwise native host.
Rosetta never translated these, before or after 27: kernel extensions (KEXTs), VMs that virtualize an x86_64 PC, and AVX-512. They are not new casualties of 27. They could not live on translation in the first place.
Which kinds of software are most at risk
There is no blacklist that is true for every Mac. Ranking leftover types in 2026 is more useful than naming one chat app:
| Type | Why it may still be Intel | Likely after 28 |
|---|---|---|
| Browsers, Office, chat, cloud storage, music | Vendors shipped Apple silicon / universal builds years ago | Keep auto-update on; usually no drama |
| Banking, brokerage, USB-key helpers | Installers sit unchanged for years and still ship Intel helpers | The site loads; the local control fails. Use a new official client or the web app |
| Printer, scanner, old camera suites | The vendor stopped drivers and left an Intel preference pane | Print or scan fails. Switch to AirPrint or a current driver |
| Audio / video plugins, font managers, old filters | The host is native; the plugin is still x86_64 | The host opens; the project is missing an effect. Ask for ARM or replace it |
| Corporate VPN, zero-trust, old antivirus | Network extensions plus background helpers, slow update cycles | You cannot reach the office network. Ask IT first—this is the painful office case |
| Older games | Unmaintained, tied to Intel frameworks | Apple will keep a slice of Rosetta; not a promise for every title |
| x86 VMs, KEXTs | Never in Rosetta’s scope | Still will not run. Move VMs to ARM guests; replace drivers with system extensions |
The leftovers people actually trip over are rarely Photoshop itself. They are bank or tax helpers, trading terminals, campus or company VPN, the scanner app that shipped with the printer, and a cleaner installed around 2018 that nobody uninstalled. They may still open on 27 and already sit on the “incompatible with 28” list. That list is your homework.
What this means for regular users
Four groups, so this does not become “the entire Mac App Store is dead”:
- System apps plus software that auto-updates: impact near zero. Going to 27, then later 28, changes the OS, not Rosetta.
- You still open one old tool (scan, burn, old ledger): medium. Find a replacement or export data now. Do not wait for 28 day-one.
- Work Mac tied to a bank helper or company VPN: high. Update the client yourself. If IT ships the installer, they need an Apple silicon build or 28 means you cannot work.
- Still on an Intel Mac: Rosetta is not your issue. The constraint is staying on 26 and whether vendors keep Intel patches. A new M-series machine—or parking critical work on an Apple silicon node—beats studying the translator.
At home, “it suddenly doesn’t work” is usually not the messenger app. It is a missing Scan button, a bank control that will not install, a 2016 indie game that is not in the legacy-game exception, or old antivirus wedging Login Items. Those entries are often already lit on the 27 list.
Rosetta always had a translation tax. Native builds usually sip less power and spin the fans less. Even if 27 still runs the Intel copy, switching daily apps to native is a win now, not only a 28 project.
What still changes the day you install 27
A few Release Notes lines sound like “27 already killed Rosetta.” They are about install and launch behavior:
- Rosetta is not restored automatically after the upgrade. If it was installed before, you may need to install it again on 27.0. Connect to the network, open any Intel app, and follow the prompt.
- Apps you set to “Open using Rosetta” launch native on 27. Old plugins that only worked under translation need a re-check.
- Installers that omit
hostArchitecturenow default to arm64. Old pre/post-install scripts can fail, and Intel plugins may not show up in the Settings warning list. - The beta legacy-game switch is not for daily use.
game-test-toolon betas turns general Rosetta off; non-game processes can misbehave, and this is not the shipping story.
So: 27 can still run Intel-only apps, but how they launch, whether translation is installed, and whether a plugin still appears can differ from 26. After you upgrade, open the Settings list and those few critical old tools. A desktop icon is not a test.
What to do now
Make it a short checklist:
- Every Apple silicon user: open the Settings list on 27, export or screenshot it. Update what you can. If there is no update, pick a replacement now. Do not bet that 28 will slip another year.
- Intel Mac users: stay on 26. Back up. Write down software you cannot lose. The next purchase is M-series only. In the gap, an isolated cloud Apple silicon Mac can run work that needs a newer OS.
- Shared family Macs: inventory the printer, the bank login, and the kids’ games separately. Updating Office does not update the scanner suite.
- Small teams / build Macs: put builds, signing, and VPN on verified Apple silicon. Do not use “the office laptop just went to 27” as the only test machine. For a fixed environment, see the M6 Mac mini checklist or a short-term cloud node.
If a vendor only offers a web app now, that is often the cleaner outcome: one less background helper, one less Rosetta alert. Do not keep an Intel installer just to save a Dock icon.
An Intel Mac can stay on 26. Work that needs a new OS should not share that machine
Most home apps will survive the inventory year on 27. What sticks is bank helpers, company VPN, and abandoned drivers. Put “needs a new OS” work on an isolated Apple silicon node and leave the old box for tools you have not moved yet.
Split the OS upgrade from software acceptance. — See cloud Mac plans
FAQ
Will Intel apps break the moment I install macOS 27?
No. Apple says macOS 27 is the last major release with general-purpose Rosetta. Intel-only apps still run on this generation. The hard stop is macOS 28, with a legacy-game exception.
Can an Intel Mac install macOS 27?
No. Golden Gate is Apple silicon only. Intel Macs stop at macOS 26. That is separate from whether Intel apps still run on an M-series Mac.
What is guaranteed to keep working after 28?
Built-in apps, software that already ships Apple silicon or universal binaries (if you installed that build), and the older games Apple keeps a Rosetta slice for. Intel-only production tools, plugins, and drivers are not in the exception.
Should a regular user buy a new Mac right now?
If you are already on M-series: update apps and clear the list. Do not buy a new machine only because of Rosetta. If you are still on Intel: the reason to replace is the OS freeze and security patches, not the translator. If work cannot stop, use cloud Apple silicon so you can validate the new OS without abandoning the old Mac.