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Tahoe

Last Week on My Mac: Repair Assistant has replaced Diagnostics

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Last September, Tahoe replaced Apple Diagnostics with a new and improved suite of tests for Apple silicon Macs. No one seems to have noticed, least of all Apple.

February 15, 2026 Macs, Technology

What has changed in macOS Tahoe 26.3?

For once, Apple’s bland statement that “this update provides important bug fixes and security updates” may be the […]

February 11, 2026 Macs, Technology, Updates

Apple has released macOS Tahoe 26.3, and security updates in Sequoia 15.7.4 & Sonoma 14.8.4

Apple has released updates to macOS, to bring Tahoe to version 26.3, and security updates for Sequoia to […]

February 11, 2026 Macs, Technology, Updates

macOS Tahoe no longer fully supports Time Capsules

If you’ve upgraded to Tahoe, your Time Capsule should still back up normally. But erase it to start new backups, and Time Machine refuses to back up to it any more.

February 11, 2026 Macs, Technology

How does an Apple silicon Mac tell the time?

Apple silicon Macs may not obtain an external reference time for many seconds after starting up. Do they adjust their local clock over that period, and if so, against what reference?

January 29, 2026 Macs, Technology

Which cryptexes does macOS Tahoe load?

Which system and AI cryptexes are loaded during macOS boot? Here are details of the 28 for AI in Tahoe 26.2, and which are new since Sequoia 15.5.

January 19, 2026 Macs, Technology

Last Week on My Mac: Local network privacy revealed

Local network privacy protection, introduced in macOS Sequoia, doesn’t use TCC as most others do, but sets up a packet filter in Network Extension. Here are details.

January 18, 2026 Macs, Technology

What’s happening with code signing and future macOS?

An overview of code signing and certificate requirements to come when macOS 27 is released in a few months, supporting only Apple silicon Macs. How Intel Macs will be affected in the near future.

January 17, 2026 Macs, Technology

Can you disable Spotlight and Siri in macOS Tahoe?

If you don’t want any of their services, you can turn Siri off in its settings, and disable indexing and search in Spotlight settings. Or you can use mdutil, if you know its limitations.

January 16, 2026 Macs, Technology

How local network privacy could affect you

Although Sequoia and Tahoe have restrictions on what can connect to local network addresses, most everyday features are exempted. This explains what you need to know in case you come across one of its privacy prompts.

January 14, 2026 Macs, Technology

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