Apple Releases macOS Sierra 10.12.1 With Bug Fixes, Features for Upcoming Macs

Apple today released macOS Sierra 10.12.1, the first update to the macOS Sierra operating system that first launched on September 20. macOS Sierra 10.12.1 has been in beta testing since September 21, with Apple seeding five betas before releasing the final version to the public.

macOS Sierra 10.12.1 is available for free to all customers who are running macOS Sierra. It can be downloaded from the Software Update function in the Mac App Store.

macossierra10121
macOS Sierra 10.12.1 features few outward-facing changes, instead focusing on bug fixes and improvements to address issues that have surfaced since the release of the operating system. It does include Photos support for the new iPhone 7 Plus Portrait feature introduced with iOS 10.1, and it also includes features designed for next-generation MacBook Pro models that are set to be released later this year. Here's a full list of changes:

This update:

- Adds an automatic smart album in Photos for Depth Effect images taken on iPhone 7 Plus
- Improves the compatibility of Microsoft Office when using iCloud Desktop and Documents
- Fixes an issue that may prevent Mail from updating when using a Microsoft Exchange account
- Fixes an issue that caused text to sometimes paste incorrectly when using Universal Clipboard
- Improves reliability of Auto Unlock with Apple Watch
- Improves security and stability in Safari

Apple has been on an accelerated timeline to get macOS Sierra 10.12.1 released, and it has likely already been sent to Apple's supply chain partners to be installed on new machines. New MacBook Pro models could be ready to launch as soon as late October.

macOS Sierra is a major operating system update that introduces Siri support, cross device copy paste options, new storage optimization tools, auto unlocking with the Apple Watch, and more. For full details on the features that are new in macOS Sierra, make sure to check out our full macOS Sierra roundup.

Related Forum: macOS Sierra

Popular Stories

iPhone 17 Pro Render Front Page Tech

iPhone 17 Pro Launching Later This Year With These 10 New Features

Sunday March 23, 2025 10:00 am PDT by
While the iPhone 17 Pro and iPhone 17 Pro Max are not expected to launch until September, there are already plenty of rumors about the devices. iPhone 17 Pro's alleged design via Front Page Tech Below, we recap key changes rumored for the iPhone 17 Pro models as of March 2025: Aluminum frame: iPhone 17 Pro models are rumored to have an aluminum frame, whereas the iPhone 15 Pro and iPhone...
iCloud General Feature Redux

iPhone Users Who Pay for iCloud Storage Receive a New Perk

Thursday March 20, 2025 12:01 am PDT by
If you pay for iCloud storage on your iPhone, Apple has a new perk for you, at no additional cost. The new perk is the ability to create invitations in the Apple Invites app for the iPhone, which launched in the App Store last month. In the Apple Invites app, iCloud+ subscribers can create invitations for any occasion, such as birthday parties, graduations, baby showers, and more. Anyone ...
iOS 18

Top 5 New Features Coming in iOS 18.4

Friday March 21, 2025 3:26 pm PDT by
We're not getting new Siri Apple Intelligence features in iOS 18.4 as expected, but the upcoming update does have quite a few new additions that will be worth upgrading for. We've rounded up the five best features to look forward to, and if you're not running the beta, you can expect to get access to these in early April. Priority Notifications If you have an iPhone or iPad that supports...
Generic iOS 19 Feature Mock

iOS 19 Coming in June With These New Features

Thursday March 20, 2025 2:04 pm PDT by
While the first iOS 19 beta is still more than two months away, there are already plenty of rumors about the upcoming software update. Below, we recap the key iOS 19 rumors so far. visionOS-Like Design In January, the YouTube channel Front Page Tech revealed a redesigned Camera app that is allegedly planned for iOS 19. According to Front Page Tech host Jon Prosser, the Camera app...
Generic iOS 18

Apple Seeds iOS 18.4 and iPadOS 18.4 Release Candidate With Priority Notifications, Ambient Music and More

Monday March 24, 2025 10:07 am PDT by
Apple today seeded the release candidate versions of upcoming iOS 18.4 and iPadOS 18.4 updates to developers for testing purposes, with the software coming a week after Apple released the fourth betas. iOS 18.4 and iPadOS 18.4 can be downloaded from the Settings app on a compatible device by going to General > Software Update. With iOS 18.4, Apple is adding the Priority Notifications...
airpods max 2024 colors

Don't Buy Into Apple's Hype About AirPods Max Gaining Lossless Audio

Monday March 24, 2025 4:24 pm PDT by
Apple today announced that AirPods Max with a USB-C port will be gaining support for lossless audio and ultra-low latency audio with a firmware update next month, alongside the release of iOS 18.4, iPadOS 18.4, and macOS 15.4. For context, audio files are typically compressed to keep file sizes smaller. There are lossy compression standards like MP3, and Apple's own Advanced Audio Codec...
Foldable iPhone 2023 Feature Iridescent Search

Foldable iPhone Expected to Launch Next Year, Costing Around $2,000

Monday March 24, 2025 3:43 am PDT by
Apple will launch its long-rumored foldable iPhone next year with a ~$2,000 premium price tag attached, expects well-connected Bloomberg reporter Mark Gurman. Gurman's comments on Apple's launch plans for its first foldable device appeared in the Q&A section of his latest Power On newsletter. Earlier this month, the reporter said Apple's foldable iPhone could be arriving "as early as 2026,"...
iOS 19 Rounded UI Elements Light

iOS 19: What to Expect From Apple's Dramatic Design Overhaul?

Monday March 24, 2025 9:47 am PDT by
Earlier this month, Bloomberg reported that Apple is planning "one of the most dramatic software overhauls in the company's history" – an update that aims to bring iOS, iPadOS, and macOS into closer visual alignment. The redesign is said to be "loosely based" on visionOS, the software behind Apple's Vision Pro headset, and will reportedly update the look of icons, menus, apps, windows, and...

Top Rated Comments

JetLaw Avatar
110 months ago
...So the headline doesn't really match up with the content of the article. C'mon, MacRumors, I expect more from you than this. The people who read your site are enthusiasts, we'll read the articles that you post about an OS update without you click-baiting us.
Score: 22 Votes (Like | Disagree)
idunn Avatar
110 months ago
Speaking of actual 'improvements,' there was Snow Leopard (10.6).
Score: 17 Votes (Like | Disagree)
Juicy Box Avatar
110 months ago
rofl get with the times already..

bet you still use xp lmao
I loved Snow Leopard, I think it was probably the most stable of all the OS Xs.
Score: 16 Votes (Like | Disagree)
jmh600cbr Avatar
110 months ago
what features for new macs?
Score: 15 Votes (Like | Disagree)
keysofanxiety Avatar
110 months ago
For the brave ones - as usual let us know how it goes!
Bricked Mac. Ejected warp core. Resulted in temporal rift. Went back in time. Stopped myself from updating. Panicked in seeing my future self and clicked 'Update' regardless. Time paradox created.

Sorry Geordi, I just love your username. :D
Score: 14 Votes (Like | Disagree)
otternonsense Avatar
110 months ago
The most magical release of Sierra yet.

I hope they debugged the hell out of Safari. It's been a pain to use.
Score: 13 Votes (Like | Disagree)