Apple Releases macOS Sierra 10.12.6 With Security and Stability Improvements - MacRumorsOpen MenuShow RoundupsShow Forums menuVisit ForumsOpen Sidebar
Skip to Content

Apple Releases macOS Sierra 10.12.6 With Security and Stability Improvements

Apple today released macOS Sierra 10.12.6, the sixth update to the macOS Sierra operating system that launched in September of 2016. macOS Sierra 10.12.6 comes two months after the release of macOS Sierra 10.12.5, an update that introduced a headphones audio fix, enhanced Mac App Store compatibility, and more.

macOS Sierra 10.12.6 is a free update for all customers who have a compatible machine. The update can be downloaded using the Software Update function in the Mac App Store.

macOS 10
There were no bug fixes, feature additions, or other changes found in macOS Sierra 10.12.6 during the beta testing process, suggesting the update focuses on security improvements and other small enhancements.

macOS Sierra 10.12.6 is likely to be one of the last updates to the macOS Sierra operating system, as Apple is preparing to shift focus to macOS High Sierra, the next version of macOS. Apple introduced macOS High Sierra at the Worldwide Developers Conference on June 5.

Related Forum: macOS Sierra

Popular Stories

duo aquarium

More Fun iPhone Duo Apps: 30 New Picks to Try

Friday November 6, 2026 3:27 pm PST by
When the iPhone Duo launched, we shared a list of some of the fun apps developers created for the new form factor. Two weeks out, developers are continuing to come up with fresh ideas, so we thought we'd share some of our favorites. Games Marbles Unhinged ($2.99) - Marbles Unhinged is a marble maze designed for the Duo. When you fold it, the floor turns into a ramp. If you stand the top...
apple pro tell logo

Apple Launching Five New Products Today

Thursday November 5, 2026 12:59 am PST by
Apple is launching five new products on Friday, November 6, following pre-orders that opened last week, including its first touchscreen MacBook Pro models. The following new products will be available from today: iPad mini with OLED display and A20 Pro chip iMac with M6 chip 14-inch MacBook Pro with M6 chip 14-inch MacBook Pro with OLED touchscreen 16-inch MacBook Pro with OLED...
iOS 28 AI

Apple Taking New Approach to Developing iOS 28 and macOS 28

Sunday November 8, 2026 7:42 am PST by
Apple has made a change to its development process for iOS 28, macOS 28, and corresponding software updates, according to Bloomberg's Mark Gurman. In his Power On newsletter today, he said Apple separates development of each year's new operating systems into three major stages. Typically, he said each stage consists of four weeks of coding followed by a four-week "convergence" period where...

Top Rated Comments

122 months ago
Safari seems... just kidding I'm downloading it now.
Score: 27 Votes (Like | Disagree)
Icaras Avatar
122 months ago
Safari seems... just kidding I'm downloading it now.
Say it. Say it!!!!!
Score: 13 Votes (Like | Disagree)
122 months ago
Is the Combo Update link posted yet?
Here is the combo: https://support.apple.com/kb/DL1931?viewlocale=en_US&locale=en_US
Score: 5 Votes (Like | Disagree)
MacBH928 Avatar
122 months ago
One thing life taught me, if your machine is working just as you like, don't update it. Why risk losing functionality on features and enhancement you probably don't need or sometimes might be annoying.

This is especially true when you use a machine with specific software combination for business or any kind of work. I remember when OS X was out, many people stayed on OS 9 because it did what they wanted and no reason to upgrade to a system you just don't know how it works.
[doublepost=1500568377][/doublepost]
It's quite the opposite: Some users find it exciting to upgrade to High Sierra. But most people who you're reading to in this thread won't update to High Sierra soon, as we typically update on summer, to get the most stable version of each MacOS release. This wasn't necessary back in the years of Tiger or Snow Leopard, but it is today, if you want the level of stability you were used to (and still... you won't match it).

I might even skip High Sierra completely, and wait til summer 2019, as HS brings a new filesystem, and I'm not sure a year will be enough to consider it fail safe in production machines.
The problem is that Apple will keep nagging you for a good 10 months on daily basis and remind you to update. I wish there was a way to stop that.
Score: 4 Votes (Like | Disagree)
justperry Avatar
122 months ago
Say it. Say it!!!!!
No no, please no. MacRumors content image
Score: 4 Votes (Like | Disagree)
122 months ago
How about links to the updated Safari on El Capitan and Yosemite?
Yeah. El Capitan and Yosemite got updates too.

Security Update 2017-003 for El Capitan: https://support.apple.com/kb/DL1932?viewlocale=en_US&locale=en_US

Safari 10.1.2 for El Capitan:
http://swcdn.apple.com/content/downloads/11/18/091-22828/isj968w4tkwqtz4jhlxngzbsr3nit6zh6z/Safari10.1.2ElCapitan.pkg

Security Update 2017-003 for Yosemite: https://support.apple.com/kb/DL1933?viewlocale=en_US&locale=en_US

Safari 10.1.2 for Yosemite:
http://swcdn.apple.com/content/downloads/49/15/091-22830/922z4gigaqp3s1ww66w487cbm88x2cd2gu/Safari10.1.2Yosemite.pkg
Score: 3 Votes (Like | Disagree)
Latest Stories
Apple Store Subscription Sign-Up Controversy Exposed
Apple Store Subscription Sign-Up Controversy Exposed
6 hours ago
Siri AI Rumored to Become 'More Like an Agent' as Early as Next Year
Siri AI Rumored to Become 'More Like an Agent' as Early as Next Year
16 hours ago
Apple Taking New Approach to Developing iOS 28 and macOS 28
Apple Taking New Approach to Developing iOS 28 and macOS 28
18 hours ago
Early Apple Black Friday Deals on Apple Watch, MacBook Air, and More
Early Apple Black Friday Deals on Apple Watch, MacBook Air, and More
2 days ago
'Backglow' Lets You Customize New MacBook Pro's Glowing Apple Logo
'Backglow' Lets You Customize New MacBook Pro's Glowing Apple Logo
2 days ago
Top Stories: Apple Product Launches, iOS 27.3 Beta, and More
Top Stories: Apple Product Launches, iOS 27.3 Beta, and More
2 days ago
More Fun iPhone Duo Apps: 30 New Picks to Try
More Fun iPhone Duo Apps: 30 New Picks to Try
2 days ago
Hands-On With Apple's New OLED Touchscreen MacBook Pro
Hands-On With Apple's New OLED Touchscreen MacBook Pro
2 days ago
Apple Store With All-New Design Opening Soon in Southern California
Apple Store With All-New Design Opening Soon in Southern California
3 days ago
Control the Glowing Apple Logo on Your New MacBook Pro
Control the Glowing Apple Logo on Your New MacBook Pro
3 days ago
Apple Shares New 'Apple Card: Apply and Use in Minutes' Ad
Apple Shares New 'Apple Card: Apply and Use in Minutes' Ad
3 days ago
Apple Says More Than 100,000 Apps Optimized for iPhone Duo, Here's What's Still Missing
Apple Says More Than 100,000 Apps Optimized for iPhone Duo, Here's What's Still Missing
3 days ago
Early Black Friday Deals Kickoff With Steep Discounts on Apple Watch Ultras and More
Early Black Friday Deals Kickoff With Steep Discounts on Apple Watch Ultras and More
3 days ago
The MacRumors Show: iOS 27.3 Looks Like a Huge Update
The MacRumors Show: iOS 27.3 Looks Like a Huge Update
3 days ago
Best Buy's Black Friday Event Begins With Sitewide Savings on Apple, TVs, More
Best Buy's Black Friday Event Begins With Sitewide Savings on Apple, TVs, More
3 days ago
Apple Releasing Yet Another Two New Products Next Week
Apple Releasing Yet Another Two New Products Next Week
3 days ago
MacBook Air Drops to Lowest Price in Months With Amazon's $250 Discount
MacBook Air Drops to Lowest Price in Months With Amazon's $250 Discount
3 days ago
Apple Rumored to Drop the iPhone's Action Button Next Year
Apple Rumored to Drop the iPhone's Action Button Next Year
3 days ago
Apple's Extended Return Policy Now in Effect for 2026 Holiday Season
Apple's Extended Return Policy Now in Effect for 2026 Holiday Season
3 days ago
Apple Music Classical Updated With New Icon and Refreshed Design
Apple Music Classical Updated With New Icon and Refreshed Design
3 days ago
OLED iPad Mini, M6 iMac, and New MacBook Pros Available From Today
OLED iPad Mini, M6 iMac, and New MacBook Pros Available From Today
3 days ago
Apple Surveys iPhone Duo Buyers About Crease and Camera
Apple Surveys iPhone Duo Buyers About Crease and Camera
3 days ago
Apple's First Touchscreen Mac is Now Arriving to Customers
Apple's First Touchscreen Mac is Now Arriving to Customers
3 days ago
Claude Gets Personal Finance Feature With Bank Account Linking
Claude Gets Personal Finance Feature With Bank Account Linking
3 days ago
Apple Arcade Adds Crossy Road Rush and NBA 2K27
Apple Arcade Adds Crossy Road Rush and NBA 2K27
3 days ago
Apple's New HomeView Smart Home Hub: Here's How Much RAM It Has
Apple's New HomeView Smart Home Hub: Here's How Much RAM It Has
4 days ago
iPad Mini vs. iPad Air Buyer's Guide: Now Just $50 Apart
iPad Mini vs. iPad Air Buyer's Guide: Now Just $50 Apart
4 days ago
First iOS 27.3 and macOS Golden Gate 27.3 Public Betas Now Available
First iOS 27.3 and macOS Golden Gate 27.3 Public Betas Now Available
4 days ago
Apple Announces a New Mac Sales Record
Apple Announces a New Mac Sales Record
4 days ago
Paid $200 for Logic Pro? Apple Says You Won't Get This New Feature
Paid $200 for Logic Pro? Apple Says You Won't Get This New Feature
4 days ago