os_x_yosemite_round_iconApple today released OS X Yosemite 10.10.4, an under-the-hood update that introduces several bug fixes and performance improvements. Most notably, 10.10.4 includes the removal of the problematic Discoveryd process, which has caused multiple networking issues for some users in OS X Yosemite.

The OS X 10.10.4 update can be downloaded through the Software Update mechanism in the Mac App Store. There are also accompanying security updates available for OS X Mavericks and OS X Mountain Lion users.

Unlike 10.10.3, which brought Yosemite's first outward-facing changes including the Photos for OS X app and new emoji features, OS X 10.10.4 is a behind-the-scenes update that focuses primarily on fixing bugs and introducing better performance through stability improvements.

The OS X Yosemite v10.10.4 update improves the stability, compatibility, and security of your Mac.

This update:

- Improves networking reliability
- Improves Migration Assistant reliability
- Addresses an issue that prevented some external displays from functioning properly
- Improves the reliability of upgrading iPhoto and Aperture libraries to Photos
- Improves reliability when syncing photos and videos to iCloud Photo Library
- Addresses an issue that could cause Photos to unexpectedly quit after importing some Lecia DNG files
- Resolves an issue that could delay outgoing email messages in Mail
- Fixes an issue where a website could prevent the user from navigating away by presenting repeated JavaScript alerts in Safari

The biggest change in OS X 10.10.4 is the elimination of the discoveryd process that's been accused of being responsible for some significant networking and WiFi bugs within Yosemite. Discoveryd is a networking process that was introduced in Yosemite to replace mDNSresponder, but it caused problems like slow wake from sleep, failures to resolve DNS names, duplicate machine names, WiFi disconnects, excessive CPU usage, battery drain, and more. In 10.10.4, discoveryd has been replaced with the older mDNSresponder process.

OS X 10.10.4 was in testing for approximately two months before seeing a public release, having been seeded to developers in mid-April. It's likely we'll see at least one more update to OS X Yosemite in the months preceding the public launch of OS X 10.11 El Capitan, Apple's next-generation Mac operating system that's also in the works.

Related Forum: OS X Yosemite

Top Rated Comments

asiga Avatar
97 months ago
I'm disappointed this notice isn't at the MacRumors main page (while the iOS update is). I stopped going to AppleInsider as my first Apple-related page when they began posting almost 100% of articles about iOS, and at that time I found MacRumors still respected the Mac, so I moved here as my first Apple page. But it seems there's no interest on the Mac anywhere any more.
Score: 10 Votes (Like | Disagree)
displayblock Avatar
97 months ago
Does this fix the XARA vulnerability? https://www.macrumors.com/2015/06/18/what-you-need-to-know-about-xara-exploits/
Score: 7 Votes (Like | Disagree)
chrfr Avatar
97 months ago
That's what I meant. Now for Cindori to update their end. Yay!
You don't need Cindori whatsoever. Just type
sudo trimforce enable into terminal.
Score: 5 Votes (Like | Disagree)
ghostface147 Avatar
97 months ago
forcetrim?
Score: 4 Votes (Like | Disagree)
east85 Avatar
97 months ago
It's been a good run TrimEnabler.
Score: 4 Votes (Like | Disagree)
Tubamajuba Avatar
97 months ago
So stable, an elephant can balance on it!
Score: 3 Votes (Like | Disagree)

Popular Stories

maxresdefault

Can't Get an iPhone 14 Pro? Here's Why You Should Wait for the iPhone 15 Ultra

Monday December 5, 2022 11:44 am PST by
Due to production issues at Apple supplier factories in China, the iPhone 14 Pro and iPhone 14 Pro Max are backordered and basically out of stock at every store. If you were planning to gift or receive an iPhone 14 Pro model for the holidays and didn't already get one, you're basically out of luck because they're gone until late December. Subscribe to the MacRumors YouTube channel for more ...
General iOS 16 Feature Yellow

iOS 16.2 for iPhone Launching This Month With These 8 New Features

Thursday December 1, 2022 8:44 am PST by
Apple plans to publicly release iOS 16.2 for the iPhone in mid-December, according to Bloomberg's Mark Gurman. The update remains in beta testing for now, with at least eight new features and changes already uncovered so far. iOS 16.2 introduces a number of new features, including Apple's new whiteboard app Freeform, two new Lock Screen widgets for Sleep and Medications, the ability to hide...
Apple car wheel icon feature yellow

Apple to Charge Under $100,000 for Apple Car, Launch Planned for 2026

Tuesday December 6, 2022 2:31 pm PST by
Apple is aiming to launch an Apple-branded consumer-oriented vehicle by 2026, and its goal is to hit a price point under $100,000 to make the car appeal to a wider range of customers, reports Bloomberg. Apple initially planned to design a car that might look similar to Canoo's Lifestyle Vehicle, where passengers could face one another in a limousine-style car with no steering wheel or...
iPhone Measure Height

Newer iPhones Allow You to Measure Someone's Height Instantly — Here's How

Saturday December 3, 2022 10:23 am PST by
iPhone 12 Pro and Pro Max, iPhone 13 Pro and Pro Max, and iPhone 14 Pro and Pro Max models feature a LiDAR Scanner next to the rear camera that can be used to measure a person's height instantly in Apple's preinstalled Measure app. To measure a person's height, simply open the Measure app, point your iPhone at the person you want to measure, and make sure they are visible on the screen from...
introducing apple music sing

Apple Music Adding a Karaoke Experience With Apple Music Sing

Tuesday December 6, 2022 7:09 am PST by
Apple today announced Apple Music Sing, a new feature in Apple Music that lets users sing their favorite songs with adjustable vocals and more. Apple Music Sing will utilize Apple Music's real-time lyrics to allow users to sing to their favorite songs using adjustable vocals, background vocals, and duet view to allow more than one singer.Apple Music Sing includes: Adjustable vocals: Users...
14 vs 16 inch mbp m2 pro and max feature 1

Major RAM Upgrade Coming to Next-Generation MacBook Pro

Friday December 2, 2022 2:03 am PST by
The next-generation MacBook Pro models could feature faster RAM, according to a recent report from a reliable source. MacRumors Forums member "Amethyst," who accurately revealed details about the Mac Studio and Studio Display before those products were announced, recently provided information about Apple's upcoming 14- and 16-inch MacBook Pro models. The new machines are expected to feature...
nothing phone 2

Nothing Plans to Launch Smartphone in US to Take on Apple's iPhone

Monday December 5, 2022 12:38 am PST by
UK-based tech company Nothing plans to launch a smartphone in the US to directly compete with Apple's iPhone, according to a new report out today. In an interview with CNBC, Nothing CEO Carl Pei said the startup is in "early conversations" with American cellular carriers about launching a new phone in the US, but he stopped short of naming any of the carriers or the phone model. Nothing...
apple ar headset concept 1

Kuo: Apple Headset Shipments Potentially Delayed Until Second Half of 2023

Sunday December 4, 2022 7:38 am PST by
Mass shipments of Apple's long-rumored AR/VR headset may be delayed until the second half of 2023 due to unspecified "software-related issues," according to the latest information shared today by tech analyst Ming-Chi Kuo. Apple headset render by Ian Zelbo Kuo said mass shipments of components for the headset are still likely to begin in the first half of 2023, but he believes that mass...
iOS 16

When Will iOS 16.2 Launch?

Friday December 2, 2022 2:13 pm PST by
Apple in late October began testing iOS 16.2 and iPadOS 16.2 updates, providing betas to both developers and public beta testers. As of now, we've had four total betas, with the fourth beta having been released earlier this week. iOS 16.2 and iPadOS 16.2 are expected before the end of the year, and we thought we'd try to narrow down the launch timeline. With only four betas released since...