{"id":47249,"date":"2025-03-31T16:49:29","date_gmt":"2025-03-31T20:49:29","guid":{"rendered":"https:\/\/mjtsai.com\/blog\/?p=47249"},"modified":"2025-04-29T13:54:36","modified_gmt":"2025-04-29T17:54:36","slug":"macos-15-4","status":"publish","type":"post","link":"https:\/\/mjtsai.com\/blog\/2025\/03\/31\/macos-15-4\/","title":{"rendered":"macOS 15.4"},"content":{"rendered":"

Juli Clover<\/a> (release notes<\/a>, security<\/a>, enterprise<\/a>, developer<\/a>, full installer<\/a>, IPSW<\/a>):<\/p>\n

With macOS 15.4, Apple is bringing Mail Categorization to the Mac. The Mail app features dedicated categories like transactions, updates, and promotions, with important emails organized into a primary section.<\/p>

Apple News+ subscribers now have access to an Apple News Food section with recipes, food articles, and more. There’s a new Sketch style for Image Playground, Memory Movie support in the Photos app for custom slideshows, and new emoji characters.<\/p><\/blockquote>\n\n

See also: Mr. Macintosh<\/a> and Howard Oakley<\/a>.<\/p>\n\n

Apple<\/a>:<\/p>\n

FSKit<\/a> is now available, enabling delivery of user space file systems as Application Extensions. These file systems support integration with DiskArbitration.<\/p>\n

[…]<\/p>\n

To enable the new HTTP loading mode, set usesClassicLoadingMode<\/code> to false on URLSessionConfiguration<\/code>. The new loading mode will become the default in a future release.<\/p>\n

[…]<\/p>\n

Fixed: M4 Macs are unable to launch virtual machine, and attempts result in a system restart.<\/p><\/blockquote>\n\n

Khaos Tian<\/a>:<\/p>\n

FSKit on macOS 15.4 doesn’t seem to work without manually writing some files to a place where we shouldn’t… Did anyone at Apple tested this before shipping it 🫠<\/p>

TIL they put this toggle under “General -> Login Items & Extensions -> File System Extensions”… macOS settings is a mess 😛<\/p>\n<\/blockquote>\n\n

Quinn<\/a>:<\/p>\n

\n

Historically the boundary was at the transport layer. When you enable the new loader, URLSession<\/code> uses Network framework’s HTTP implementation.<\/p>\n<\/blockquote>\n\n

Jeff Johnson<\/a>:<\/p>\n

Incidentally, before updating my Mac mini, I got an “Upgrade to macOS Sequoia” notification even though the Mac was already running Sequoia (15.3.2).<\/p>

[…]<\/p>

After the updates, both my Mac mini and my iPad showed one of the most confusing “welcome” screens that I’ve ever seen. Indeed, they confused even me!<\/p>

[…]<\/p>

The two options given were “Continue” and “Only Download Automatically”. Which of those two did I want? Confused, I selected Continue.<\/p>

I turns out that I wanted neither<\/em>.<\/p><\/blockquote>\n

It looks like a dark pattern to encourage people to auto-update.<\/p>\n\n

Rich Trouton<\/a>:<\/p>\n

\n

I have not found a way to suppress this screen using a defaults<\/a> command, but it is possible to suppress the Update Your Mac Automatically<\/strong> screen on macOS Sequoia using a configuration profile.<\/p>\n<\/blockquote>\n\n

Paul Haddad<\/a>:<\/p>\n

\n

Our long Apple Intelligence nightmare is over, I upgraded to 15.4 on two machines and neither turned that stuff back on! Still wasting several GB of storage, but it’s progress.<\/p>\n<\/blockquote>\n\n

Marcin Krzyzanowski<\/a>:<\/p>\n

\n

The release of macOS 15.4 builds is different from that of RC2. YET my computer does not update.<\/p>\n<\/blockquote>\n\n

Rich Trouton<\/a>:<\/p>\n

\n

Apple has added new management options for Apple Intelligence as part of the release of macOS Sequoia 15.4.<\/p>\n<\/blockquote>\n\n

Marcin Krzyzanowski<\/a>:<\/p>\n

PSA: don’t upgrade macOS to 15.4 if you need to use Xcode 16.2 - the lldb debugger is crashing on start<\/a>.<\/p><\/blockquote>\n\n

Previously:<\/p>\n