Top common macOS 27 issues and how to fix them

Curious about the known macOS 27 issues? If you’ve just installed Golden Gate or are planning to, it’s worth knowing what to expect.

Apple released macOS 27 Golden Gate publicly on 14 September 2026, after a beta cycle that began in June 2026.

Most of the issues collected here were reported during that beta cycle. Some will have been fixed in the public release or in a later update, and some may not have been — each entry below notes what still needs checking.

Below is an overview of the issues reported so far, and what you can do about them.

Where these reports come from

Many of the reports below date from developer beta 1 (build 26A5353q, June 2026). That matters when you read them: beta software is test software, and a bug seen in beta 1 may have been fixed before the public release. If you are running a beta rather than the public release, the same advice still applies — don’t run it on the only Mac you rely on for work.

A quick look at a typical beta cycle from Apple

This isn’t set in stone, but it usually looks a bit like this.

Dev beta first, then public beta follows shortly after.  There are typically several refinement betas, then finally the public release. Most issues will be found in beta 1 and are then almost always resolved well before public launch.

Because the public release has now shipped, a number of the beta-specific bugs below may already be fixed — check your own macOS version and the current behaviour before assuming an entry still applies.

You’ll just need to check your macOS version in System Settings > General > About.

macOS 27 issues 

Installation and compatibility

Here are the installation and compatibility issues that came up, broken down by type.

Virtual machine installation fails

macOS Golden Gate beta won't install in most VM environments (Parallels, UTM, VirtualBuddy, VMware, Tart). There’s a known incompatibility between the macOS 26.6 host VZMacOSInstaller API and the macOS 27 IPSW.

I saw one valid workaround online, and the solution was to try and create the VM on a Mac that’s already running Golden Gate beta, then copy it or upgrade a Tahoe VM to Golden Gate through Software Update.

Asahi Linux boot partition is hidden

Installing Golden Gate beta changes the boot picker, and anyone with Asahi Linux partitions will run into an issue because they become invisible. The data is preserved, but you can't boot Linux. Asahi filed a bug report on this, so for now the workaround is to boot from a macOS 26 or older volume to access the Linux partition. No timeline for fix on this one as of yet.

OpenCore Legacy Patcher is incompatible

OpenCore Legacy Patcher does not support macOS 27, and this is not a matter of waiting for the next release. In its official statement on Golden Gate the project says the team “remains focused on macOS Tahoe 26 and releases previously supported by OCLP — there are currently no plans to attempt working with Golden Gate.” Work on Tahoe 26 continues, so the project itself is not ending; macOS 27 specifically is ruled out.

No support for Intel-based Macs

This isn’t a bug. macOS 27 runs only on Macs with Apple silicon — Apple's rule is any Mac with an M-series or A-series chip — so staying on macOS Tahoe is the only option for an Intel Mac.

Rosetta 2 last version

macOS 27 is the last release with general-purpose Rosetta support. Apple states that Rosetta is available on any Mac with Apple silicon running macOS 27 or earlier, and that starting with macOS 28 Rosetta functionality will be available only for certain older, unmaintained games that rely on Intel-based frameworks. So Intel-only apps still run today, but this is the last release you can rely on for them.

You should check which of your apps still need it. Do that in System Settings > General > About > System Report > Applications > look for "Kind: Intel”.

Two things Apple flags for macOS 27 itself: if Rosetta was already installed, it is not automatically restored when you upgrade, and apps you had set to “Open using Rosetta” now launch natively instead. Apple also suggests re-checking any compatibility problem that previously needed Rosetta.

Performance and stability issues

Slowness

Some slowness right after installing is normal while Spotlight reindexes your drive; it can mean high CPU, fan noise and faster battery drain. It settles once indexing finishes — how long that takes depends on how much data you have and how fast the Mac is. You can leave your Mac plugged in and awake so it has a chance to resolve on its own.

Battery drain

Higher-than-usual battery drain was reported during the beta. Post-install indexing accounts for some of it; whether any of it persists in the public release is not something we have measured.

Performance verdict from testers

Apple describes macOS 27 as more responsive — quicker AirDrop transfers, faster network file browsing and speedier Safari start page loading — but publishes no figures, and we have no benchmark of our own to report.

RAM usage

We have no RAM measurements of our own to report, and Apple publishes no RAM requirement for macOS 27 beyond the Apple silicon requirement itself.

App and feature issues

​Apps drawer / Launchpad bug

The app's icon doesn't respond until you click Spotlight in the menu bar first. And rapid-clicking sometimes triggers the old Tahoe animation instead of the new Golden Gate one. It’s not a big deal, and it should be fixed in subsequent releases.

Siri AI inconsistencies

Apple documents several Siri issues in the macOS 27 release notes. One is specifically about third-party apps: custom images that are not SF Symbols might not appear in Siri results for third-party apps. Others affect Apple's own apps — Siri might not detect which photos you have selected on screen, it can report more photos than it will actually add to an album, Maps responses can come back incomplete or badly formatted, and “Ask Siri” can appear in context menus even when Siri is switched off in System Settings or you are in a region where Siri isn’t supported yet.

Software Update may not appear immediately

If Rosetta 2 is installed, the update may not show in System Settings right away. A workaround for this is to wait or check again after a restart.

Some third-party apps crash or won't open

Third-party crashes were common during the beta. Check with the developer of any app that misbehaves to see whether a macOS 27 compatible update has shipped.

What can you fix yourself right now?

​1. Restart after installing

Do a proper full restart (not just sleep) to clear up any temporary processes and help your macOS rebuild caches after a major update.

2. Give indexing time

Give indexing time to finish — leave the Mac plugged in and awake. If it still feels slow once Spotlight has stopped working through your drive, investigate further using the steps below.

3. Update all your apps

Check the App Store for updates, and for non-App-Store apps, check in-app updaters.

4. Free up some more disk space

Leaving roughly 15–20% of your SSD free gives macOS room for virtual memory and caches. If you’re close to full, clear out large files, old downloads and unused apps.

5. Review login items

Go to your System Settings > General > Login Items & Extensions. Remove anything unnecessary; this helps reduce conflicts with the new OS.

The Smart Care feature from CleanMyMac is a great little post-update housekeeping scan. It can get rid of any stale caches from the previous macOS, remove leftover files from your old apps, and disable unnecessary login items that can conflict with Golden Gate. I like its Menu App, too, because I can keep an eye on my CPU and RAM in real time. You can test CleanMyMac for 7 days — get your free trial.