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Apple Seeds Second Beta of macOS High Sierra to Public Beta Testers

Apple today seeded the second public beta of an upcoming macOS High Sierra update to public beta testers, two weeks after releasing the first public beta. The second public beta of macOS High Sierra corresponds with the third developer beta, provided to developers earlier this week.

Beta testers who have signed up for Apple's beta testing program are able to download the second macOS High Sierra beta through the Software Update mechanism in the Mac App Store after the proper profile has been installed.

Those who want to be a part of Apple's beta testing program can sign up to participate through the beta testing website, which gives users access to iOS, macOS, and tvOS betas. For instructions on how to install the public beta, check out our how to, and make sure to make a backup before giving the software a try. Don't install the beta on a main machine, as betas are notoriously unstable. High Sierra runs on all machines that support Sierra.

The macOS High Sierra update is designed to improve and refine the existing macOS Sierra operating system. Along with a new, more efficient file system (APFS) designed for modern storage, the update introduces Metal 2, the next-generation version of Apple's Metal graphics API with support for machine learning, external GPUs, and VR content creation.

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High Efficiency Video Encoding (HEVC aka H.265) is coming in High Sierra, and many of the existing apps are being updated. Photos features a new persistent side view and editing tools for Curves, Selective Color, and Live Photos, while Siri is gaining a more natural voice and support for more music-related commands.

Safari offers a new autoplay blocking feature for videos and Intelligent Tracking Prevention to protect your privacy, while Mail storage is being optimized to take up 35 percent less space. iMessages can now be stored in iCloud, and there are new iCloud Drive file sharing options and new iCloud storage family plans.

For a full overview of the new features you can expect to see when macOS High Sierra is released in the fall, make sure to check out our full macOS High Sierra roundup.

Top Rated Comments

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28 months ago
Tons of issues with the first PB, hope this improves functionality / performance. It needs it.
Rating: 6 Votes
28 months ago
Does anyone know if its safe to upgrade to APFS on a 1TB Apple-made fusion drive in this PB?
Rating: 5 Votes
28 months ago
Reading some of these posts it sounds like people are running High Sierra on their main partition vs secondary partition or external drive. Why would one need to run a Time Machine backup on a partition with just High Sierra and whatever one is testing?
Rating: 4 Votes
28 months ago

Yea I downloaded the entire thing from No luck.

I did everything you did. Quit all apps, disconnected all peripherals, and even tried installing it from safe mode. Same result, every time. This sucks.

Add one more to the pile! I even did a clean install of Sierra, and it still won't install it.

If anyone figures this out, please share!

I've looked all over the webs for a possible answer, and no luck...anyone else?
Rating: 2 Votes
28 months ago

The first public beta build was workable, 10.13 Beta (17A306f) is plagued with bugs. If you are thinking about public beta testing - skip this version. I can't keep up with all the bug reporting.
Some issues I'm having is Fan running all the time (iMac 27-inch, Late 2012) 3.4 GHz Intel Core i7 32 GB 1600 MHz DDR3 NVIDIA GeForce GTX 680MX 2 GB)
Bubbles appear while completing forms on safari
Flickering Safar preferences
copy and paste not always working ctrl C
computer becomes unresponsive for seconds
Try it if you'd like, but I would recommend skipping this version.
Yes, and airdrop isn't working properly.
So many more bugs. I've already sent in 4 and haven't sent in photos not importing from iPhone.
M is last weeks. F is today's. Don't do it, it is a big fail and you'll never get any work done.

not having any of those problems; PB2 is running much better here than PB1 in most respects. try re-installing the beta...
Rating: 2 Votes
27 months ago
You know what? I will find a bug report, maybe they will take notice.

This version is better in some ways, e.g. it lets my MB sleep now, instead of shutting it down, but, on the other hand, it has broken Photos...
Rating: 1 Votes
28 months ago
Following these comments, this beta is much better than the last and also much worse than the last.

Over to you, Cupertino.
Rating: 1 Votes
27 months ago

Interesting. Ok I’ll have to try this tomorrow. Too late and I’m too sleepy right now to deal with a catastrophic issue if it were to occur lol. I will check back in to let you know if get the same success.

Trying it right were my steps...

1. Download High Sierra from Mac App Store
2. Go through regular Install Process
3. Install fails and reboots into normal Sierra log in screen
4. Restart and hold down D
5. Runs check, says no issues found, takes me to Safari Support Page
6. I quit out of that and select "Re-Install"
7. It's currently going through the install process, however, it's saying it's installing macOS Sierra...will update when done.

Pawel, was there anything you did different?

UPDATE: It didn't work. I'll try one more time and see if it will recognize the "Install High Sierra" for the re-install of the system.

UPDATE 2: Same steps, same result....isn't this the definition of insanity? Tried it with Command-R as well, still just shows installer for Sierra. Not sure what you did Pawel that's different than what I did.
Rating: 1 Votes
28 months ago

Hope it fixes the sleep issue...

Installed the developer beta yesterday, I'm still seeing sleep problems. That said, lot's of things are better, time machine is working again...
Rating: 1 Votes
28 months ago

Not upgrading from PB1 and the installer is simply just rebooting my Mac without going through the installation process. Anyone else getting this issue?

I had the same issue. Rebooted and shutdown. Unplugged all accessories and tried it again from App Store. Worked afterwards.

Also turned off 3rd party firewall (little snitch).
Rating: 1 Votes

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