Apple Releases Second Beta of macOS High Sierra 10.13.5 to Public Beta Testers

Apple today released the second beta of an upcoming macOS High Sierra 10.13.5 update to public beta testers, two weeks after seeding the first beta and three weeks after releasing macOS High Sierra 10.13.4. Today's public beta is identical to the second beta provided to developers earlier this week.

Beta testers who have signed up for Apple's beta testing program will be able to download the new macOS High Sierra beta through the Software Update mechanism in the Mac App Store.

macoshighsierra10135publicbeta
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.

macOS High Sierra 10.13.5 once again introduces support for Messages on iCloud, a feature that was present in macOS High Sierra 10.13.4 betas but pulled ahead of the release of the updated software.

Messages on iCloud is designed to store your iMessages in iCloud for improved syncing. Right now, incoming iMessages will be sent to all devices where you're signed into your Apple ID, but it's not true cloud-based syncing because your old messages don't show up on new devices nor does deleting a message remove it from all of your devices, both features enabled through Messages on iCloud.

The Messages on iCloud feature also allows your older iMessages to be stored in iCloud rather than on your iPhone, iPad or Mac, saving valuable storage space. Older attachments are also stored in iCloud.

No other major outward-facing changes were discovered in the first two developer betas, but the update likely includes bug fixes and improvements to address issues discovered since the release of macOS High Sierra 10.13.4. Because Apple does not provide detailed release notes for macOS High Sierra updates, we may not know exactly what's included until the new software is provided to the public.

Related Forum: macOS High Sierra

Popular Stories

Apple Glass

Apple Smart Glasses: Everything We Know So Far

Wednesday May 21, 2025 8:21 am PDT by
Google recently made waves by showcasing a set of lightweight smart glasses featuring deep Gemini integration and an optional in-lens display. The demo has reignited interest in Apple's own smart glasses project, which has been the subject of rumors for nearly a decade. Here's a recap of where things stand. Current Development Status Apple is actively working on new chips specifically...
Apple CarPlay Ultra instrument cluster themes 01

Apple's CarPlay Ultra Is Here – Does Your iPhone Support It?

Thursday May 15, 2025 5:17 am PDT by
Apple's recently announced CarPlay Ultra promises a deeply integrated in-car experience, but not all iPhone users will be able to take advantage of the new feature. According to Apple's press release, CarPlay Ultra requires an iPhone 12 or later running iOS 18.5 or later. This means if you're using an iPhone 11, iPhone XR, or any older model, you'll need to upgrade your device to access...
iPhone 17 Air Pastel Feature

iPhone 17 Air Battery Capacity and Weight Allegedly Revealed

Monday May 19, 2025 2:22 am PDT by
Apple is expected to launch an all-new ultra-thin iPhone 17 Air later this year, and while there have been plenty of rumors about the camera's overall design and thinness, we haven't heard any details about the device's weight and battery capacity until now. According to the leaker going by the account name "yeux1122" on the Korean-langauge Naver blog, the 6.6-inch iPhone 17 Air has a weight ...
Apple Glasses Purple Feature

Apple Smart Glasses Launching in 2026

Thursday May 22, 2025 12:22 pm PDT by
Apple is planning to launch a set of smart glasses by the end of 2026, reports Bloomberg. The glasses will be comparable to the Meta Ray-Bans and the Android XR glasses that Google showed off earlier this week. Apple's smart glasses are expected to include cameras, microphones, and AI capabilities, much like the Meta Ray-Bans. The glasses will be able to take photos, record video, provide...
WWDC 2025 Banner

Apple Announces WWDC 2025 Schedule, Including Keynote Time

Tuesday May 20, 2025 8:13 am PDT by
Apple today announced a more detailed schedule for its annual developers conference WWDC, which runs from June 9 through June 13. The schedule confirms that Apple's keynote will begin on Monday, June 9 at 10 a.m. Pacific Time, with a live stream to be available on Apple.com, in the Apple TV app, and on YouTube. During the keynote, Apple is expected to announce iOS 19, iPadOS 19, macOS 16,...
macOS 16 visionOS Inspired Feature 1

macOS 16: Everything We Know So Far

Tuesday May 20, 2025 7:31 am PDT by
The Worldwide Developers Conference (WWDC), Apple's annual developer and software-oriented event, is less than three weeks away. We haven't heard a great deal about macOS 16 ahead of its announcement this year, so we could be in for some major surprises when June 9 rolls around. Here's what we know so far about the next major update to Apple's Mac operating system. macOS 16 Name? Every year ...
maxresdefault

OpenAI Buys Jony Ive's AI Startup to 'Completely Reimagine What It Means to Use a Computer'

Wednesday May 21, 2025 10:27 am PDT by
OpenAI is acquiring io, the hardware-based AI startup co-created by Jony Ive, OpenAI announced today. Ive has been working with OpenAI CEO Sam Altman on io for two years, and the duo expects to develop a family of AI devices. In a video shared by OpenAI, Altman and Ive outlined their partnership and what they expect to create as a result of the merger. "I have a growing sense that everything ...

Top Rated Comments

Mac32 Avatar
93 months ago
If you still haven't updated to High Sierra, DON'T. Sierra was a better OS, and there are no real benefits with High Sierra (unless you want to use an eGPU). It's basically the same system with a new slower file system (vs HFS), startup and overall response is slightly slower, there are various bugs depending upon which Mac model you use etc...etc... The latest 10.13.4 update made things worse, not better (introduced new bugs with both my iMac Pro and MacBook). This is like walking backwards into the future.
Score: 7 Votes (Like | Disagree)
crescentmoon Avatar
93 months ago
I have the latest HS on my mid 2010 mac pro and it is the stablest OS so far for my computer. I was on sierra but I was getting system freezes that multiplied after the security updates. There has not been one system freeze or crash since updating to HS 10.13.4
Score: 5 Votes (Like | Disagree)
ipponrg Avatar
93 months ago
I'm still on El Capitan on my work laptop, and Sierra on my home laptop.

Am also afraid to upgrade :D
Score: 3 Votes (Like | Disagree)
amaze1499 Avatar
93 months ago
I still don't get it. I can open multiple PDFs and drag and drop thumbnails of any page to any document and rearrange the oder.

Maybe you needto turn on thumbnails here?

works for me as usual as well
Score: 2 Votes (Like | Disagree)
Squuiid Avatar
93 months ago
I have the latest HS on my mid 2010 mac pro and it is the stablest OS so far for my computer. I was on sierra but I was getting system freezes that multiplied after the security updates. There has not been one system freeze or crash since updating to HS 10.13.4
Same here. High Sierra on a 2010 Mac Pro is a rock.
On a 2016 Touchbar MacBook Pro with LG 5K screen, not so much. It crashes a lot.
Score: 2 Votes (Like | Disagree)
otternonsense Avatar
93 months ago
You said HS has been crap. I gave an example of a specific HS-only feature saving me several hundred pounds.
Ok, fair. We have completely different usage scenarios, and I admit I had overlooked this feature.

Speaking from the shoes of a designer working with multiple displays and I/O means, High Sierra (and the new MBP) have offered me nothing but setbacks.
Score: 1 Votes (Like | Disagree)