MacOS Sequoia 15.8.3 & MacOS Tahoe 26.7.3 Security Updates Released

Nov 10, 2026 - Leave a Comment

MacOS Sequoia 15.8.3 update

Apple has released MacOS Tahoe 26.7.3 and MacOS Sequoia 15.8.3 as software updates for Mac users who are not running the Golden Gate operating system. The updates are said to include security patches and bug fixes, and are recommended to all users.

Separately, Apple has release MacOS 27.2.1 Golden Gate, iOS 27.2.1, iPadOS 27.2.1, watchOS 27.2.1, iOS 26.7.3, iOS 18.7.12, and other updates as well.

How to Download & Install MacOS Sequoia 15.8.3 Update or MacOS Tahoe 26.7.3 Update

Always backup your Mac with Time Machine before installing any system software update.

  1. From the  Apple menu, choose “System Settings”
  2. Go to “General”, and then choose “Software Update”
  3. Scroll down below the “MacOS 27.2.1” banner promoting Golden Gate, and look for the “Other Updates” section where you can choose to install MacOS Tahoe 26.7.3 or MacOS Sequoia 15.8.3 instead *

MacOS Sequoia 15.8.3 update

* Be mindful that if you click the (i) info button to get additional information about the MacOS Sequoia or Tahoe update, then MacOS 27.2.1 update will be selected to install by default. Uncheck that, and check the Tahoe or Sequoia update instead. You can read more about avoiding accidentally installing MacOS Golden Gate here if you’d like.

Your Mac must restart to complete installation.

MacOS Sequoia 15.8.3 & MacOS Tahoe 26.7.3 Full Installer Download Links

We maintain an updated list of all available MacOS installers here as a helpful resource.

MacOS Sequoia 15.8.3 & MacOS Tahoe 26.7.3 Release Notes Release Notes

Release notes are brief:

This update provides important security fixes and is recommended for all users.

For information on the security content of Apple software updates, please visit this website: https://support.apple.com/100100

You will want to update your other Apple devices as well, as just about everything received security updates.

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Related articles:

Posted by: Paul Horowitz in Mac OS, News

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