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Apple today released macOS Sierra 10.12.3, the third update to the macOS Sierra operating system that launched on September 20. macOS Sierra 10.12.3 comes over a month after the release of macOS Sierra 10.12.2, and has been in testing since December 14.

macOS Sierra 10.12.3 is a free update for all customers who are running macOS Sierra. The update can be downloaded using the Software Update function in the Mac App Store.

macossierra10.12.3.jpg

No specific changes, bug fixes, or feature additions were discovered during the beta testing process, and Apple only said the update "improves the stability, compatibility, and security of your Mac." Apple's release notes paint a more complete picture, stating that the update improves graphics switching for the new 15-inch MacBook Pro, fixes issues with Adobe Premiere, and includes important fixes for Preview.
The macOS Sierra 10.12.3 Update improves the stability and security of your Mac, and is recommended for all users.
This update:

- Improves automatic graphics switching on MacBook Pro (15-inch, October 2016).
- Resolves graphics issues while encoding Adobe Premiere Pro projects on MacBook Pro with Touch Bar (13- and 15-inch, October 2016).
- Fixes an issue that prevented the searching of scanned PDF documents in Preview.
- Resolves a compatibility issue with PDF documents that are exported with encryption enabled.
- Fixes an issue that prevented some third-party applications from correctly importing images from digital cameras.

Enterprise content: Resolves an issue were network or cached user accounts (such as Active Directory accounts) using the maxFailedLoginAttempts password policy were becoming disabled.
macOS Sierra 10.12.3 will likely soon be followed by another update, as Apple has been committed to regularly making updates to the operating system since its September release.



Article Link: Apple Releases macOS Sierra 10.12.3 With Graphics Fixes for 2016 MacBook Pro
 

ghostface147

macrumors 68040
May 28, 2008
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Hopefully with an iTunes update for my syncing videos from the desktop Photos app to my phone.
 

arggg14

macrumors 6502a
Dec 30, 2014
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Really hope this fixes this issue....Spent two days working with Apple engineers and it turns out it's a known bug.

Using a 2016 15" RMBP. Every so often the folders on my dock will open like this when I click on them showing no apps/documents. The only solution is to open a finder window instead. Also, anytime this happens the next time I swipe with the gesture to open app expose, the entire computer freezes up and the only thing I can do is restart. A reinstall of OS X did not solve the issue Is this a known bug on 10.12.2?
 
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chucker23n1

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Dec 7, 2014
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Release notes:

This update:

  • Improves automatic graphics switching on MacBook Pro (15-inch, October 2016).
  • Resolves graphics issues while encoding Adobe Premiere Pro projects on MacBook Pro with Touch Bar (13- and 15-inch, October 2016).
  • Fixes an issue that prevented the searching of scanned PDF documents in Preview.
  • Resolves a compatibility issue with PDF documents that are exported with encryption enabled.
  • Fixes an issue that prevented some third-party applications from correctly importing images from digital cameras.
Enterprise content: Resolves an issue were network or cached user accounts (such as Active Directory accounts) using the maxFailedLoginAttempts password policy were becoming disabled.​
 
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nutmac

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Mar 30, 2004
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No specific changes, bug fixes, or feature additions were discovered during the beta testing process, and Apple only said the update "improves the stability, compatibility, and security of your Mac." Should Apple's official release notes offer any additional information, we'll update this post.

The release note does say the update:
  • Improves automatic graphics switching on MacBook Pro (15-inch, October 2016).
  • Resolves graphics issues while encoding Adobe Premiere Pro projects on MacBook Pro with Touch Bar (13- and 15-inch, October 2016).
  • Fixes an issue that prevented the searching of scanned PDF documents in Preview.
  • Resolves a compatibility issue with PDF documents that are exported with encryption enabled.
  • Fixes an issue that prevented some third-party applications from correctly importing images from digital cameras.
Enterprise content: Resolves an issue were network or cached user accounts (such as Active Directory accounts) using the maxFailedLoginAttempts password policy were becoming disabled.
 
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idunn

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Jan 12, 2008
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- Improves automatic graphics switching on MacBook Pro (15-inch, October 2016).
- Resolves graphics issues while encoding Adobe Premiere Pro projects on MacBook Pro with Touch Bar (13- and 15-inch, October 2016).
- Fixes an issue that prevented the searching of scanned PDF documents in Preview.
- Resolves a compatibility issue with PDF documents that are exported with encryption enabled.
- Fixes an issue that prevented some third-party applications from correctly importing images from digital cameras.



Admittedly no version of OSX has been perfect. However, I do not recall any of this being an issue with such as Snow Leopard. Perhaps someone could explain how that once working fine no longer does several versions later?
 

Cougarcat

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Sep 19, 2003
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- Improves automatic graphics switching on MacBook Pro (15-inch, October 2016).
- Resolves graphics issues while encoding Adobe Premiere Pro projects on MacBook Pro with Touch Bar (13- and 15-inch, October 2016).
- Fixes an issue that prevented the searching of scanned PDF documents in Preview.
- Resolves a compatibility issue with PDF documents that are exported with encryption enabled.
- Fixes an issue that prevented some third-party applications from correctly importing images from digital cameras.



Admittedly no version of OSX has been perfect. However, I do not recall any of this being an issue with such as Snow Leopard. Perhaps someone could explain how that once working fine no longer does several versions later?

With graphics, it's new hardware. In the case of the PDF bugs, Apple rewrote the engine in Sierra because they want it to be on the same foundation as iOS ( https://www.macrumors.com/2017/01/03/macos-sierra-users-avoid-broken-preview-edit-pdfs/) Sometimes Apple rewrites things for seemingly no reason, with disastrous results. The most notable example is the wifi stack in Yosemite. Eventually they just went back to the old version!

Update size: 1 GB. Seriously? Isn't it a minor update with 6 very specific changes?

Apple never lists all the changes. Only the "important" ones.
 
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chucker23n1

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Dec 7, 2014
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Admittedly no version of OSX has been perfect. However, I do not recall any of this being an issue with such as Snow Leopard.

People like to paint a grass-is-greener picture of Snow Leopard, but it's not as though that version was perfect. There were eight point releases for it, one of which (10.6.3) needed a "Supplemental Update" because its original release had some issues.

Here's a random assortment of things fixed in Snow Leopard point releases:

  • Addresses an issue that might cause DVD playback to stop unexpectedly
  • Addresses an issue that might make it difficult to remove an item from the Dock
  • an issue that caused data to be deleted when using a guest account
  • resolves an issue that causes the keyboard or trackpad to become unresponsive
  • Improves reliability of Ethernet connections.
There were also weird off-shoots like the "Snow Leopard Font Update". Which, incidentally, included PDF-related fixes.

You'd think something like DVD playback and Ethernet connections would be rock-solid by the seventh major release of OS X. But alas. They weren't.

Perhaps someone could explain how that once working fine no longer does several versions later?

Well, regressions generally happen when code is modernized, optimized, or for other reasons replaced by an equivalent. In this case, Apple appears to have tried to unify some of the PDF code between iOS and macOS. One positive effect of this is that you can now print to PDF from any iOS app (though the UI to do so is bizarre). The negative effect is lots of breakage in the meantime.
 
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