Apple today seeded the fourth beta of an upcoming macOS High Sierra 10.13.6 update to developers and public beta testers for testing purposes, one week after seeding the third 10.13.6 beta.

The new macOS High Sierra 10.13.6 beta can be downloaded through the Software Update mechanism in the Mac App Store with the proper profile installed.

macos hs beta
We don't yet know what improvements the sixth update to macOS High Sierra will bring, but it likely focuses on bug fixes and performance improvements for issues that were not able to be addressed in macOS High Sierra 10.13.5.

No feature changes were discovered in the first three macOS High Sierra 10.13.6 betas, but we'll update this post if new features or notable bug fixes are discovered in the fourth beta.

Work on macOS High Sierra is wrapping up, with Apple now shifting focus to the next-generation version of macOS, macOS 10.14, which was unveiled at the Worldwide Developers Conference in early June.

Related Forum: macOS High Sierra

Top Rated Comments

pat500000 Avatar
pat500000
95 months ago
How’s hs so far? Stable? I’m on sierra.
Score: 3 Votes (Like | Disagree)
Morgenland Avatar
Morgenland
95 months ago
is blurry pdf issue still exist ?
Depends on the degree of sobriety
Score: 2 Votes (Like | Disagree)
Kognito Avatar
Kognito
95 months ago
How’s hs so far? Stable? I’m on sierra.
Did a fresh install a week or so back from Sierra after holding out due to the bugs and the compatability issues which inevitably plague various dev tools.

Can happily say I’m pleased to have made the switch as High Sierra seems just as fast, if not slightly faster and a lot of the niggles I had with Sierra are gone. No issues with APFS although if I were you I’d go for the fresh install and transfer content rather than an in-place filesystem change.
Score: 1 Votes (Like | Disagree)
ceej269 Avatar
ceej269
95 months ago
How’s hs so far? Stable? I’m on sierra.
Immediately after installation and restart there was no wifi. It was turned off and nothing happened when attempting to turn on. So I again rebooted. Seems okay now but has only been updated for 5 mins so time will tell.
Score: 1 Votes (Like | Disagree)
w4z Avatar
w4z
95 months ago
is blurry pdf issue still exist ?
Score: 1 Votes (Like | Disagree)
tywebb13 Avatar
tywebb13
95 months ago
2.47 GB, wasn't the last one quite a bit smaller?
Yes. This is because it downloaded the combo this time. Did for me too. There is a delta for beta 4. Not sure why the combo downloaded this time. Combos usually only download if you have skipped some point releases, eg going from 10.13.1 to 10.13.6. Whereas if you go from 10.13.5 to 10.13.6 or an earlier beta of 10.13.6 to a later one then we would expect the delta to download.

As well as overall size, you can tell which one you are getting by looking in the folder /Library/Updates as it downloads. If you see folder 091-90757 you are getting the combo. If you see 091-90756 it is the delta. Don't bother looking if you've already installed it - these folders delete themselves after installation. You have to look AS IT DOWNLOADS BEFORE IT INSTALLS. For public releases it should also say "Combined Update" in the mac app store if it is a combo - but it didn't this time for this beta.

Here are all the packages for beta 4 with their respective file sizes:



Attachment Image
Score: 1 Votes (Like | Disagree)
Read All Comments

Popular Stories

iOS 26 Battery Glass Feature

iPhone 16 Pro Max 80% Charge Limit: One Year Later, Was It Worth It?

Wednesday September 24, 2025 3:58 pm PDT by
With the iPhone 15 series, I did an experiment and kept my iPhone's Charge Limit set at 80 percent for an entire year. It provided an interesting look at the impact of charge limits on battery longevity, so I decided to repeat it for the iPhone 16 line. Since September 2024, my iPhone 16 Pro Max has been limited to an 80 percent charge, with no cheating. As of today, my battery's maximum...
Read Full Article • 529 comments
iOS 26

Everything New in iOS 26.1 Beta 1

Monday September 22, 2025 12:44 pm PDT by
Apple released the first beta of iOS 26.1 today, just a week after launching iOS 26. iOS 26.1 mainly adds new languages to Apple Intelligence, but there are a few other features that are worth knowing about. New Apple Intelligence Languages Apple Intelligence is now available in Danish, Dutch, Norwegian, Portuguese (Portugal), Swedish, Turkish, Chinese (Traditional), and Vietnamese. AirPo...
Read Full Article • 134 comments
iPhone 17 Pro Colors

Skipped the iPhone 17 Pro? Here's What is Rumored for iPhone 18 Pro

Tuesday September 23, 2025 8:55 am PDT by
While the iPhone 18 Pro and iPhone 18 Pro Max are still a year away, there are already a few rumors about the devices that offer an early look ahead. Below, we have recapped some of the early iPhone 18 Pro rumors so far. This story was published previously, and it has been updated to reflect the latest rumors. Many early rumors prove to be true, but nothing is confirmed yet, and Apple's...
Read Full Article • 105 comments
apple tv 4k new orange

Next Apple TV Expected to Launch This Year With These New Features

Monday September 22, 2025 10:00 am PDT by
The next Apple TV is expected to be released later this year, and a handful of new features and changes have been rumored for the device. Below, we recap what to expect from the next Apple TV, according to rumors. Likely Features N1 Chip With Wi-Fi 7 Last year, Bloomberg's Mark Gurman said the next Apple TV would be equipped with Apple's own combined Wi-Fi and Bluetooth chip, which is...
Read Full Article • 97 comments
iphone 17 pro dark blue 1

Apple Blames In-Store MagSafe Chargers for iPhone 17 Pro Display Model Scratches

Wednesday September 24, 2025 10:22 am PDT by
The marks on the iPhone 17 Pro models that people have noticed at Apple retail stores are caused by the chargers that Apple uses, Apple confirmed today. Apple told 9to5Mac that worn MagSafe charging stands in stores are causing marks on the iPhone 17 Pro and iPhone 17 Pro Max. Apple says that the marks are not scratches, and are instead material transfer from the stand to the phone. The...
Read Full Article • 213 comments
iPhone 17 Pro USB C Port

iPhone 17 Pro Max's USB-C Charging Speeds Tested With Apple Chargers

Monday September 22, 2025 7:29 am PDT by
The website ChargerLAB has tested the iPhone 17 Pro Max's USB-C charging speeds with a variety of Apple's chargers, from 18W to 140W. The device reached a peak charging speed of around 36W with the following Apple chargers:40W Dynamic Power Adapter with 60W Max 61W USB-C Power Adapter 67W USB-C Power Adapter 70W USB-C Power Adapter 96W USB-C Power Adapter 140W USB-C Power AdapterFor...
Read Full Article • 56 comments
AirPods Pro 3 Newsroom

Apple's 'Back to School' Offer Ends Soon, Now Applies to AirPods Pro 3

Wednesday September 24, 2025 7:20 am PDT by
Apple's annual "Back to School" promotion for students ends soon, so act fast if you want to score free AirPods with the purchase of an eligible new Mac or iPad. Until Tuesday, September 30, college students and qualifying educational staff in the U.S. can receive free AirPods 4 with Active Noise Cancellation when they purchase an eligible new Mac or iPad from Apple. This is a $179 value. ...
Read Full Article • 17 comments
ios 26 digital id passport wallet

Apple Confirms iOS 26 Wallet Passport Feature is Coming in 2025

Tuesday September 23, 2025 1:06 pm PDT by
Digital ID, the iOS 26 feature that lets U.S. passport holders add their passports to the Wallet app, is coming later in 2025, Apple confirmed today. Apple updated the release timing wording of Digital ID on its iOS 26 features page. "Digital ID will be coming later this year with US passports only," it reads. Prior to today, the footnote for the feature said "Digital ID will be available ...
Read Full Article • 71 comments
Apple Intelligence General Feature 2

iOS 26.1 Adds New Apple Intelligence Languages and Expands AirPods Live Translation

Monday September 22, 2025 11:15 am PDT by
With iOS 26.1, Apple Intelligence is gaining support for additional languages, including Danish, Dutch, Norwegian, Portuguese (Portugal), Swedish, Turkish, Chinese (Traditional), and Vietnamese. Apple announced plans to expand the languages that can be used with Apple Intelligence last year, and now the added language support is here. Apple Intelligence is now available in the following...
Read Full Article • 71 comments
maxresdefault

iPhone 17 Pro is Vulnerable to Scratching, But Not Where You Might Think

Tuesday September 23, 2025 2:18 pm PDT by
Early reports have suggested that the iPhone 17 Pro and iPhone Air are more vulnerable to scratches and scuffs, primarily due to damage spotted at Apple Stores. Apple customers have discovered that the iPhone Air and iPhone 17 Pro models Apple has out for display at its retail locations have scratching in the area of the MagSafe charger. Those devices are handled by hundreds to thousands of...
Read Full Article • 142 comments