Apple Releases Safari Technology Preview 39, But New Version Crashes on Launch [Updated]

by

safaripreviewiconApple today released a new update for Safari Technology Preview, the experimental browser Apple first introduced in March of 2016. Apple designed the Safari Technology Preview to test features that may be introduced into future release versions of Safari.

Safari Technology Preview release 39 includes fixes and improvements for Beacon API, Directory Upload, Fetch API, Input Events, JavaScript, WebAssembly, WebRTC, Web Inspector, and Media. With Safari 11 now available to developers through the macOS High Sierra beta, Apple is providing two versions of Safari Technology Preview, one for macOS Sierra users and one for those using macOS High Sierra.

Safari Technology Preview users might want to hold off on downloading Safari Technology Preview 39 as the new version appears to be crashing at launch and not working properly.

The Safari Technology Preview update is available through the Software Update mechanism in the Mac App Store to anyone who has downloaded the browser. Full release notes for the update are available on the Safari Technology Preview website.

Apple's aim with Safari Technology Preview is to gather feedback from developers and users on its browser development process. Safari Technology Preview can run side-by-side with the existing Safari browser and while designed for developers, it does not require a developer account to download.

Update: The Safari Technology Preview 39 release has been pulled by Apple and is no longer available for download.

Top Rated Comments

Robert.Walter Avatar
44 months ago
I installed it. And must say it was the snappiest crash ever!

(Actually did crash on install.)

Edit: I wrote crash on install but this may have been on some kind of auto start during install. I’m not sure, as I wasn’t paying attention, just noticed that the crash report dialogue box popped up.

Also, my Mac mini 2012 is running the latest High Sierra Public Beta installed on 9/1 or 9/2 and, this, I’m running STP for High Sierra.
Score: 4 Votes (Like | Disagree)
Erdbeertorte Avatar
44 months ago

Many thanks for the info!

I just told them to update the article.


Edit: Thanks [USER=46537]@Weaselboy[/USER] :) for updating it.
Score: 2 Votes (Like | Disagree)
dantracht Avatar
44 months ago

[USER=846058]@dantracht[/USER] [USER=1004540]@Vashetti[/USER] [USER=824959]@groovyd[/USER]

Yes it got pulled as you can see here: https://developer.apple.com/safari/download/

Although it never showed up in the App Store for me since a few versions ago on three different Macs (two got even a few clean installs without backup import in the meanwhile). Even the High Sierra betas sometimes don't show up and I had to download the full installer.

I always check that website every day after a new High Sierra beta had been released.

On all Macs the developer beta access utility was installed.

Still no crash with 39 on my Late 2011 MBP. Didn't test it on the other two Macs yet.



On my iMac there is also still iTunes 12.7 (running fine) what I never got on the other Macs. It had been pulled months ago shortly after release and never came back.

Many thanks for the info!
Score: 1 Votes (Like | Disagree)
PsykX Avatar
44 months ago

A very snappy crash!

It was about time they made their crashes snappier!

Works totally fine on my Mac though.
Score: 1 Votes (Like | Disagree)
bradhs Avatar
44 months ago
No crashing issues here...
Score: 1 Votes (Like | Disagree)
dlbilling Avatar
44 months ago
Yes, indeed! A very snappy crash! Mine did not crash on install, just the first launch. My MacBook Air is running Sierra 10.12.6.

Is there an option to go back down to release 38?

I'm not a developer, just testing from a user perspective, and only started recently. Is there an official way we should report the problem? Although, I would hope the powers that be already know...

Is our only option to go back to Safari and just wait for another update?
Score: 1 Votes (Like | Disagree)

Top Stories

bloodoxygenapplewatch

Apple Watch Series 7 Rumored to Feature Blood Glucose Monitoring

Monday January 25, 2021 5:05 am PST by
The Apple Watch Series 7 will reportedly feature blood glucose monitoring via an optical sensor, according to ETNews. The report, which mainly focuses on the blood glucose capabilities of the Samsung Galaxy Watch 4, explains that Apple is intending to bring blood glucose monitoring to the upcoming Apple Watch Series 7 using a non-invasive optical sensor. Measuring blood glucose levels,...
14

Apple Releases iOS 14.4 and iPadOS 14.4 With New Camera Warnings and Bug Fixes

Tuesday January 26, 2021 10:04 am PST by
Apple today released iOS and iPadOS 14.4, the fourth major updates to the iOS 14 operating system that was initially released in September. iOS and iPadOS 14.4 come more than a month after the release of iOS and iPadOS 14.3, updates that brought new emojis, Intercom support, and more. The iOS and iPadOS 14.4 updates can be downloaded for free and the software is available on all eligible...
7

Apple Releases watchOS 7.3 With Unity Watch Face, Expanded ECG Availability and More

Tuesday January 26, 2021 10:03 am PST by
Apple today released watchOS 7.3, the third major update to the watchOS 7 operating system that was released in September. watchOS 7.3 comes more than a month after watchOS 7.2, an update that brought support for Apple Fitness+ ‌‌The watchOS 7.3 update‌‌ can be downloaded for free through the dedicated Apple Watch app on the iPhone by going to General > Software Update. To install...
14

Apple Releases tvOS 14.4 for Fourth and Fifth-Generation Apple TV Models

Tuesday January 26, 2021 10:02 am PST by
Apple today released tvOS 14.4, the fifth update to the tvOS 14 operating system that was initially released back in September. tvOS 14.4 comes more than a month after the release of tvOS 14.3. tvOS 14.4, which is a free update, can be downloaded over the air through the Settings app on the ‌Apple TV‌ by going to System > Software Update. ‌‌‌‌Apple TV‌‌‌‌ owners who have...
14

Apple Releasing iOS 14.4 and watchOS 7.3 Later Today

Tuesday January 26, 2021 7:20 am PST by
In its Black History Month announcement this morning, Apple has confirmed that iOS 14.4 and watchOS 7.3 will be released later today. watchOS 7.3 expands the ECG app on the Apple Watch Series 4 and newer to Japan, Mayotte, Thailand, and the Philippines, while iOS 14.4 introduces a notification on iPhone 12 models with non-genuine cameras. Both software updates also add support for a new...
AirPods Pro Gen 2 Feature2

Second-Generation AirPods Pro Widely Rumored to Launch in First Half of 2021

Tuesday January 26, 2021 8:24 am PST by
Apple plans to release second-generation AirPods Pro within the first half of 2021, according to unnamed industry sources cited by Taiwanese publication DigiTimes in a report focused on flash memory supplier Winbond. From the report:Winbond is also expected to be among the NOR flash suppliers for Apple's next-generation AirPods Pro slated for launch later in the first half of this year, the...
apple watch black unity

Apple Celebrates Black History Month With Limited-Edition Watch, Featured Apps and Books, and More

Tuesday January 26, 2021 6:14 am PST by
Apple today announced that it will be celebrating Black History Month with curated content that highlights and amplifies Black creators, artists, developers, and businesses across the App Store, Apple Music, the Apple TV app, Apple Books, Apple Podcasts, and more. The content will be featured throughout the month of February. Black Unity Sport Band has "Truth. Power. Solidarity." ...
magsafecasedangle

Apple Elaborates on Potential for iPhone 12 and MagSafe Accessories to Interfere With Implantable Medical Devices

Saturday January 23, 2021 2:42 pm PST by
Since the launch of iPhone 12 models in October, Apple has acknowledged that the devices may cause electromagnetic interference with medical devices like pacemakers and defibrillators, but the company has now shared additional information. Apple added the following paragraph to a related support document today:Medical devices such as implanted pacemakers and defibrillators might contain...
14

iOS 14.4 Patches Vulnerabilities That May Have Been Actively Exploited

Tuesday January 26, 2021 12:16 pm PST by
Apple today released iOS 14.4 and iPadOS 14.4, and along with a handful of minor new features, the software introduces security fixes for three vulnerabilities that may have been used in the wild. According to a security support document shared by Apple, there were kernel and WebKit vulnerabilities affecting all iPhones and iPads running iOS or iPadOS 14. The kernel vulnerability could allow ...
matte black macbook pro colorware

Apple Researching High-End Titanium MacBook Casings With Unique Textured Finish

Tuesday January 26, 2021 7:10 am PST by
Apple is researching the use of processed titanium with unique properties for future MacBooks, iPads, and iPhones, according to a newly-granted patent application. In a filing titled "Titanium parts having a blasted surface texture," granted by the U.S. Patent and Trademark Office and spotted by Patently Apple, Apple explains how various devices could adopt titanium casings with a...