Let macOS update itself
One switch in Software Update and another in Privacy & Security keep the security fixes arriving without you noticing.
Works on: macOS Tahoe 26 and later · checked on macOS Golden Gate 27
Published: · Source: Snoflaa
An update that sits in a notification for three weeks is protecting nobody. macOS can deal with most of them on its own.
Open System Settings → General → Software Update and click the info button next to Automatic Updates. The switch that matters most is Install system data files and security updates: leave it on. The others decide whether full macOS updates download and install by themselves.
Then go to System Settings → Privacy & Security, click Background Security Improvements and make sure Automatically Install is on. These are small fixes Apple ships between full releases; they install in the background without restarting the Mac, although some only take effect after the next restart. They need macOS Tahoe 26.1 or later.
Full macOS updates do need a restart, and the Mac asks rather than pulling the desk out from under you. If it always catches you mid-sentence anyway, let updates download on their own and install them yourself: the update will be sitting there, already downloaded, for the five minutes when it suits you.
On macOS Sequoia and earlier, the security switch under Automatic Updates is called Install Security Responses and system files.
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