Addresses an issue that could cause Messages conversations to temporarily be listed out of order.

The macOS High Sierra 10.13.3 update improves the security, stability, and reliability of your Mac. To enable Messages in iCloud, go to Preferences in Messages, click Accounts, then select “Enable Messages in iCloud”. This update adds support for Messages in iCloud, which lets you store messages with their attachments in iCloud and free up space on your Mac. The macOS High Sierra 10.13.5 update improves the stability, performance, and security of your Mac and is recommended for all users.

Fixes an issue that may prevent Mail users from moving a message from Gmail to another account.

Fixes an issue that may prevent Photos from recognizing AVCHD media from some cameras.

Play music at the same time on multiple AirPlay 2-enabled speakers in your house, all in sync.

Control your home audio system and AirPlay 2-enabled speakers throughout your house.

The macOS High Sierra 10.13.6 update adds AirPlay 2 multi-room audio support for iTunes and improves the stability and security of your Mac.

The macOS High Sierra 10.13.6 Supplemental Update improves the stability and reliability of MacBook Pro with Touch Bar (2018) computers and is recommended for all users.

Added download links for Security Update 2019-001, which is recommended for all users and improves the security of macOS.

This update is recommended for all users. The macOS High Sierra 10.13.6 Update adds AirPlay 2 multiroom audio support for iTunes and improves the stability and security of your Mac. It’s another way iPhone and Mac just click. Continuity Camera works in the Finder, Mail, Messages, Notes, Pages, Keynote, and Numbers. Or scan a receipt, and a straightened version is immediately available in the Finder as a PDF. You can take a photo of something on your desk and instantly see it in your Pages document. Just choose Insert a Photo from the File menu.

Now you can use your iPhone to shoot or scan a nearby object or document and have it automatically appear on your Mac. Finally, applications like Safari, Spotlight, Notes, Apple Mail, and other have been polished up. Better graphics and VR supported have also been included along with backwards compatibility so you install the new OS in machine even from late 2009. There's a new file system, AFS, for better security, reliability and speed in file transfers. MacOS High Sierra is packed with new features and refinements.

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