Apple Releases macOS High Sierra 10.13.5 With Messages in iCloud Support

Apple today released macOS High Sierra 10.13.5, the fifth major update to the macOS High Sierra operating system available on Apple's Mac lineup. macOS High Sierra 10.13.5 comes more than two months after the release of macOS High Sierra 10.13.4, which introduced eGPU support, Business Chat in Messages, and more.

macOS High Sierra 10.13.5 can be downloaded directly from the Mac App Store or through the Software Update function in the Mac App Store on all compatible Macs that are already running macOS High Sierra.

macoshighsierra10135
The macOS High Sierra 10.13.5 update introduces support for Messages in iCloud, a feature that Apple has been testing and working on since macOS High Sierra was announced last June.

Messages in iCloud, as the name suggests, stores your iMessages in iCloud rather than on each of your individual devices, introducing improved cross-device syncing and saving on-device storage space. Messages in iCloud support is also available in iOS 11.4, which was released to the public earlier this week.

macOS High Sierra will be followed by macOS 10.14, a next-generation version of macOS that Apple is expected to introduce at the Worldwide Developers Conference next week.

Related Forum: macOS High Sierra

Popular Stories

M3 iPad Air

Apple's Next Two Products Are Coming Soon

Thursday February 12, 2026 11:17 am PST by
Apple plans to release an iPhone 17e and an iPad Air with an M4 chip "in the coming weeks," according to the latest word from Bloomberg's Mark Gurman. "Apple retail employees say that inventory of the iPhone 16e has basically dried out and the iPad Air is seeing shortages as well," said Gurman. "I've been expecting new versions of both (iPhone 17e and M4 iPad Air) in the coming weeks."...
Apple Sales Coach App

Apple Launching New 'Sales Coach' App

Friday February 13, 2026 2:01 pm PST by
Apple plans to launch a rebranded "Sales Coach" app on the iPhone and iPad later this month, according to a source familiar with the matter. "Sales Coach" will arrive as an update to Apple's existing "SEED" app, and it will continue to provide sales tips and training resources to Apple Store and Apple Authorized Reseller employees around the world. For example, there are articles and videos...
Coffee Burgundy and Purple iPhone 18 Pro Mock

Five iPhone 18 Pro Features Revealed in New Report

Friday February 13, 2026 8:43 am PST by
While the iPhone 18 Pro and iPhone 18 Pro Max are still seven months away, an analyst has revealed five new features the devices will allegedly have. Rumored color options for the iPhone 18 Pro models In a research note with investment firm GF Securities on Thursday, analyst Jeff Pu outlined the following upgrades for the iPhone 18 Pro models: Smaller Dynamic Island: It has been rumored...
iOS 26 Home Feature

Three New Apple Home Products Rumored for 2026

Friday February 13, 2026 4:18 pm PST by
Apple has a long list of new products rumored for 2026, including a series of home products that will see the company establishing more of a presence in the smart home space. Robots are on the horizon for 2027, but the 2026 releases will be a little tamer. HomePod mini We're expecting a new HomePod mini 2 to launch at any time. Apple isn't going to update the device's design, but we could...
m5 macbook pro deal

Why You Shouldn't Buy the Next MacBook Pro

Tuesday February 10, 2026 4:27 pm PST by
Apple is planning to launch new MacBook Pro models as soon as early March, but if you can, this is one generation you should skip because there's something much better in the works. We're waiting on 14-inch and 16-inch MacBook Pro models with M5 Pro and M5 Max chips, with few changes other than the processor upgrade. There won't be any tweaks to the design or the display, but later this...

Top Rated Comments

FocusAndEarnIt Avatar
101 months ago
Messages in iCloud: delivered on the last business day before it'd be a year since it was announced at the last WWDC. Haha.
Score: 57 Votes (Like | Disagree)
101 months ago
Messages in iCloud: delivered on the last business day before it'd be a year since it was announced at the last WWDC. Haha.
Meh who cares. Better delay it and make it work properly.
Score: 18 Votes (Like | Disagree)
101 months ago
Breaking news:

AirPower will be released at 9:55am PDT Monday just before the keynote.
Score: 15 Votes (Like | Disagree)
macintoshmac Avatar
101 months ago
Messages in iCloud: delivered on the last business day before it'd be a year since it was announced at the last WWDC. Haha.
There was a time when Apple refrained from vapourware. Today, under Cook, they are beginning a dangerous trend into vapourware that brings the respect level down several "notches".

It is one full year and now they are delivering it. These guys used to perfect things in the back before releasing, and one could buy products and use services right on the day of announcement, not any longer. I do not know why, understand why, but I do not like this trend.

Messages in Cloud: 3 days before iOS 12 instead of shipping with 11.
HomePod was announced to come months later, released even more months later.
iMac Pro, previewed. Why! Just launch when ready!

There used to be pride in it. But I do sincerely feel that any kind of personalisation, any sort of character of a company was lost the day Jobs passed away.
Score: 13 Votes (Like | Disagree)
nvmls Avatar
101 months ago
So, what’s your point?
Clearly .13.5
Score: 12 Votes (Like | Disagree)
GadgetBen Avatar
101 months ago
So I guess we should all make a diary entry for June 2019 for the main features of the next macOS that will be announced next week?
Score: 12 Votes (Like | Disagree)