Apple Releases macOS Catalina 10.15.6 Supplemental Update With Virtualization Bug Fix

Apple today released a supplemental update for macOS Catalina 10.15.6, with the update coming a month after the original launch of macOS Catalina 10.15.6.

macos catalina wallpaper
The ‌‌macOS Catalina‌‌ 10.15.6 Supplemental Update can be downloaded from the Mac App Store using the Update feature in the System Preferences app.

According to Apple's release notes, the update fixes a problem that could cause virtualization apps like VMware to crash. It also fixes an issue that could cause the 2020 iMac to appear washed out after waking from sleep. Apple's full release notes are below:

macOS Catalina 10.15.6 supplemental update includes bug fixes for your Mac.

- Fixes a stability issue that could occur when running virtualization apps
- Resolves an issue where an iMac (Retina 5K, 27-inch, 2020) may appear washed out after waking from sleep

macOS Catalina 10.15.6 will likely be the last update to the macOS Catalina operating system as Apple transitions to macOS Big Sur, the newest version of macOS set to be released in the fall.

Top Rated Comments

ignatius345 Avatar
15 months ago

A fired Apple employee will not starve. I don't demand perfection from my family because they don't work for Apple as professionally paid software people. Somebody failed and is responsible that there was field exposure. Apple got lucky that this wasn't a data corruption bug.

OS development is only as complex as what you develop. What they are changing in a point release this late in the development cycle should be fixing bugs and thoroughly testing them. The general expectation of incremental point releases is that the higher the number the less changes involved. That small amount of change should be thoroughly tested, especially if it's to such core service as the HV FW.

Somebody fsck'd up big time. Heads have to roll.
Jesus. Give it a rest. Both of you. Nobody cares. I’m reading through this thread trying to find salient info about bug fixes, not listen to your rants about whether people should be fired or not. Hopefully a moderator will come in and delete all of these (and this message as well). Thank you.
Score: 23 Votes (Like | Disagree)
Colonel Blimp Avatar
15 months ago

Somebody fsck'd up big time. Heads have to roll.
Whose heads? The programmer who wrote the code? An individual software tester who failed to catch the bug? The person who wrote the test plan? The QA manager who supervised the testing? The QA director?

How about the Product Manager who signed off on the release? The director of software engineering? The VP of Software?

Or how about the executives who decided to allocate only so many resources to software testing, while maintaining pressure to meet an ambitious feature release schedule?

In any company, the responsibility for releasing buggy software goes all the way up the chain, not just theoretically but in actual practice. The danger of demanding that heads roll is that 1) the heads probably won’t belong to the people responsible for creating the conditions that lead to the release of buggy software, 2) the people who replace your decapitated developers will have less experience with the software you’re developing, and 3) your developers may become more concerned about covering their posteriors (a singularly inappropriate metaphor for someone facing decapitation) than about working together to release high-quality software.

Don’t get me wrong. As someone who used to run software QA for a living, I’m inclined to think that people should be serving jail time for some of the software bugs I keep reading about, but actually deciding who to fire or hang or sacrifice to the Red God isn’t entirely straightforward, nor perhaps entirely helpful.
Score: 13 Votes (Like | Disagree)
chucker23n1 Avatar
15 months ago
So, about two and a half weeks between VMware narrowing it down to a sandbox issue, reporting it to Apple, and Apple releasing a fix. That's not so bad.
Score: 11 Votes (Like | Disagree)
CJ Dorschel Avatar
15 months ago
I've been a Mac user for almost 20 years yet this is the first time I have never updated my systems to the latest OS. I've held off on 10.15 but am considering updating as Apple has begun to drop support for certain aspects of 10.14 (security updates, etc will continue of course). I've been experiencing issues on two Mac Pro's that haven't been resolved with weeks of online research, clean installs, and Apple tech leading me to consider updating to 10.15.

My biggest concern is access to root as Apple continues to extend SIP. I've always disabled SIP and Gatekeeper as I require read/write access for development and third party apps. Certainly this it not something everyone should do and doing so is always with risk yet is a necessity for my personal needs and I utilize other precautions, etc.

That stated, my biggest concern is read/write access to root as Apple created two volumes for Applications - User and System. I've created a script that mounts the drive for read/write, assigns the necessary permissions, then deletes it. I've used this on my MacBook Pro for development work which is now running Big Sur.

My concerns with 10.15:

- Will this be necessary in case my system needs to be restarted? (I rarely do so unless necessary)
- Has Apple locked the ability to mount and change root permissions with incremental 10.15.x updates?

Don't even get me started on Big Sur. Running it on my MacBook Pro for development and struggling to adjust to the UI in addition to SSV. I completely understand Apple's focus on security especially for novices/everyday users, yet their focus on locking the system down further with each release makes it difficult for third party developers to maintain their apps which is most likely Apple's true intentions as they want to force developers to utilize the Mac App Store. Given there are ways to easily bypass Apple's security measures - granted they've made the processes more difficult - and users have already found backdoors in Big Sur, I wonder if there are better methods for security measures than what Apple has been implementing since SIP and Gatekeeper were introduced.
Score: 10 Votes (Like | Disagree)
jchap Avatar
15 months ago

Hope somebody lost their job.
It seems a bit cruel to wish that someone would lose their job (accompanied with all the resulting hardship) over this. It must have been an inconvenience to you and to many other people to deal with this bug, but is it reasonable to attribute the problem to one person in specific, or to make one person take the blame for something Apple might not have known about or fully understood the implications of to begin with? Do you also expect this same level of perfection from your friends, your family and those you deal with in everyday life?

Make no mistake—I, too, get upset and irritated when software bugs interrupt my productivity and enjoyment of technology. I’ve complained a lot to Apple over the years, and logged countless support cases for numerous products, both software and hardware. When something is not to my liking or when it causes me inconvenience as a user, I will complain.

That said, I also realize that with something as complex as an operating system, there’s not just one person pulling the strings behind the curtain, so to speak. It’s a team effort, and sometimes mistakes are made. No manufacturer has ever released a flawless product without blemish, one which operates perfectly in every way. In the end, it’s up to the end user to make sure their bases are covered, so that when a particular piece of software or hardware they use does not function properly, they have a means of recovering.
Score: 8 Votes (Like | Disagree)
Belle Pomme Avatar
15 months ago
My MacBook Pro also has that washed-out problem too, so I hope it helps.
Score: 7 Votes (Like | Disagree)

Top Stories

affinity designer contour tool

Serif Updates Affinity Photo, Designer, and Publisher With New Tools and Functions

Thursday February 4, 2021 1:58 am PST by
Serif today announced across-the-board updates for its popular suite of Affinity creative apps, including Affinity Photo, Affinity Designer, and the Apple award-winning Affinity Publisher for Mac, all of which were among the first professional creative suites to be optimized for Apple's new M1 chip. "After another year which saw record numbers of people switching to Affinity, it's exciting to...
studio buds family

Beats Studio Buds Debuting Today With Active Noise Cancellation, Stemless Design, and More for $150

Monday June 14, 2021 8:00 am PDT by
We've seen a lot of teasers about the Beats Studio Buds over the past month since they first showed up in Apple's beta software updates, and today they're finally official. The Beats Studio Buds are available to order today in red, white, and black ahead of a June 24 ship date, and they're priced at $149.99. The Studio Buds are the first Beats-branded earbuds to truly compete with AirPods...
General Apps Messages

Android iMessage Competitor Puts Pressure on Apple

Friday July 30, 2021 3:15 am PDT by
Google and the three major U.S. carriers, including Verizon, AT&T, and T-Mobile, will all support a new communications protocol on Android smartphones starting in 2022, a move that puts pressure on Apple to adopt a new cross-platform messaging standard and may present a challenge to iMessage. Verizon recently announced that it is planning to adopt Messages by Google as its default messaging...
maroon5memories

Apple Collaborates With Maroon 5 to Add 'Memories' Song to Photos App

Wednesday September 25, 2019 12:02 pm PDT by
Apple has teamed up with Maroon 5 to add the group's new song "Memories" to the Memories feature in the Photos app, allowing it to be used for photo slide show creations, reports Billboard. "Memories" will be available as a soundtrack option for a limited time and it is available to iPhone and iPad users running the latest iOS 13 and iPadOS software. Memories in the Photos app are created ...
qualcomm snapdragon x60 5g

iPhone 13 Lineup Expected to Use Qualcomm's Snapdragon X60 Modem With Several 5G Improvements

Wednesday February 24, 2021 8:10 am PST by
Apple's next-generation iPhone 13 lineup will use Qualcomm's Snapdragon X60 5G modem, with Samsung to handle manufacturing of the chip, according to DigiTimes. Built on a 5nm process, the X60 packs higher power efficiency into a smaller footprint compared to the 7nm-based Snapdragon X55 modem used in iPhone 12 models, which could contribute to longer battery life. With the X60 modem, iPhone...
iPhone 13 Wi Fi 6E feature update

Wi-Fi 6E Explained: What It Could Mean for iPhone 13 and Beyond

Monday August 2, 2021 8:00 am PDT by
The iPhone 13 is widely expected to come with Wi-Fi 6E capabilities, and while it may seem rather nuanced to the average consumer, with only improved speeds and being "up to date" in the realm of Wi-Fi technology, it's actually a fairly significant improvement, laying the groundwork for much of what we know the future holds. To truly understand Wi-Fi 6E, MacRumors sat down for an exclusive...
iphone 12 colors 2021

iPhone 12 Colors: Deciding on The Right Color

Thursday November 5, 2020 8:35 am PST by
The iPhone 12 and iPhone 12 Pro arrived in October 2020 in a range of color options, with entirely new hues available on both devices, as well as some popular classics. The 12 and 12 Pro have different color choices, so if you have your heart set on a particular shade, you might not be able to get your preferred model in that color. iPhone 12 mini and iPhone 12 The iPhone 12 mini and iPhone...
m1 imac orange

New iMac Tidbits: Headphone Jack on Side, Ethernet Port on Power Adapter, Spatial Audio and WiFi 6 Support, No SD Card Slot

Wednesday April 21, 2021 6:38 am PDT by
Apple yesterday announced a completely redesigned 24-inch iMac with the M1 Apple silicon chip. The new iMac, the first major redesign of the Mac desktop computer since 2012, has several changes compared to the previous generation. In the aftermath of the event, a few new features and tidbits may have slipped under the radar, so we’ve compiled this list of some of the less-talked-about...
original iphone

Phil Schiller Says iPhone Was 'Earth-Shattering' Ten Years Ago and Remains 'Unmatched' Today

Monday January 9, 2017 7:15 am PST by
To commemorate the tenth anniversary of the iPhone, Apple marketing chief Phil Schiller sat down with tech journalist Steven Levy for a wide-ranging interview about the smartphone's past, present, and future. The report first reflects upon the iPhone's lack of support for third-party apps in its first year. The argument inside Apple was split between whether the iPhone should be a closed...
os x mountain lion macs 16x9 2

Apple Makes OS X Lion and Mountain Lion Free to Download

Wednesday June 30, 2021 12:19 pm PDT by
Apple recently dropped the $19.99 fee for OS X Lion and Mountain Lion, making the older Mac updates free to download, reports Macworld. Apple has kept OS X 10.7 Lion and OS X 10.8 Mountain Lion available for customers who have machines limited to the older software, but until recently, Apple was charging $19.99 to get download codes for the updates. As of last week, these updates no...