macOS updatesRelease notes
macOS 27.0.1: the first bug-fix update for Golden Gate
Short answer
macOS 27.0.1 came out on 28 September 2026, two weeks after macOS 27, as build 26A434. Apple described it only as bug fixes, and users reported that the Mission Control and external display problems were still there. It's been replaced by macOS 27.2, so if you're on 27.0 or 27.0.1, update straight to 27.2.
What changed
Apple's notes said the update "provides important bug fixes" without listing them. Mac news sites and Apple's security page don't add more detail for the Mac.
What it didn't fix
- Mission Control and Spaces stutter, and black screens with several displays. See the workarounds.
- External display flicker and signal drops through docks. See external monitor problems on macOS 27.
What to do now
Open System Settings › General › Software Update and install macOS 27.2, which includes everything in 27.0.1 plus 263 security fixes. See what's in macOS 27.2.
Sources and further reading
- Apple releases macOS 27.0.1, iOS 27.0.1, iPadOS 27.0.1 and visionOS 27.0.1 · MacTech
- Apple releases macOS Golden Gate 27.0.1 · MacDailyNews
- macOS update tracker · Mr. Macintosh
Applies tomacOS 27