Supplemental Update for macOS Mojave 10.14.6 Released

Aug 1, 2019 - 45 Comments

New MacOS Mojave software update

Apple has released a supplemental software update to the freshly released MacOS Mojave 10.14.6 update.

The supplemental system software update apparently includes a bug fix to resolve an issue where some Macs were not waking from sleep properly, therefore it is recommended for all MacOS Mojave 10.14.6 users to install.

Labeled as “macOS Mojave 10.14.6 Supplemental Update”, the supplemental update is available to download now for any Mac user who is currently running MacOS Mojave 10.14.6.

The simplest way to download the macOS Mojave 10.14.6 Supplemental Update is by going to the  Apple menu > System Preferences > Software Update

Mac users can also choose to install the supplemental update as a package installer over an existing macOS 10.14.6 installation, available to download from Apple from the following link:

Release notes accompanying the supplemental update download are brief, stating:

“The macOS Mojave 10.14.6 Supplemental Update fixes an issue that may prevent certain Macs from waking from sleep properly.”

It’s always possible that other bug fixes, security enhancements, or changes are included in the 950mb supplemental update but are not mentioned in the brief release notes.

If you notice anything different, interesting, or noteworthy about the MacOS Mojave 10.14.6 supplemental update, share it with us in the comments below


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Posted by: Paul Horowitz in Mac OS, News


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  1. robert says:

    Latest Mojave update did not fix problem with Air Drop not communicating with older Apple computers.
    “Air Drop will not connect to older versions of OSx.
    For example High Sierra 10.13.6 (iMac)
    For example IOS 12.4 (iPad)”

    • LSP93 says:

      We have a similar problem, but with an external display connected to a mini2018. Before the last supplemental update it worked pretty well. After the supdate it works fine until it has finished the startup process (in V mode the unix lines) and goes into GUI mode. Resulting in a Grey Screen, where we have to replug the cable. All the usual steps like resetting PRAM, safe mode etc. reveil no diff.
      Searched the Web, found nothing.

  2. MO Jayne Doh says:

    I have a MacBook Pro mid-2017 with Touch Bar, didn’t have any of the waking-after-sleep issues that others seemed to. After this latest supplemental update, I now have to open and close my laptop twice to get a clear screen. When I open the lid the first time, it looks like it was printed with a dot matrix printer (if any of you remember those), then clears when I close it and reopen it. I don’t even always have to use my fingerprint to unlock it after I close it and quickly reopen it … not sure if that’s new or not, since I never had the screen issue before this. But it’s still better than the windows POS I have to use for work …

    • Paul says:

      There’s actually yet another supplemental update that’s aiming to fix the sleep issues reported with this particular version, you can get info about that and download it here:

      So even if you installed the first supplemental update, install the second one to fix the sleep problem.

      • Don says:

        Since installing Mojave 10.14.6 on my 2017 Macbook Pro I haven’t been able to to get an external display working properly in clamshell mode. I can set it up in display preferences and get it to work with the Macbook lid open, but if I close the lid or put the Macbook to sleep the external display stops working. If I close the lid during restart I can enter my password using external external display (and magic keyboard) but then the display goes blank.

  3. robert says:

    Using Mohave 10.14.6:
    Air Drop will not connect to older versions of OSx.
    For example High Sierra 10.13.6 (iMac)
    For example IOS 12.4 (iPad)

  4. CharlieW says:

    Wow, I heard that WPS office is coming to Mac on August too, and it’s going to be a major game-changer for Mac users.   Have been using it for years in my win system, hope it works well with Catalina this time.

  5. shadab says:

    MacBook Pro Mid 2012

    Processor 2.6 GHz Core i7

    Memory 8 GB

    I tried to updates my MacBook Pro 15′ Mid-2012 but after restarting, it just back to normal and the updates are still there. I tried so many times and nothing’s changed. What should I do?

    If I want to upgrade to higher OS X, which one runs best on my MacBook Pro 15′ Mid-2012? I don’t need to install the newest one, I just need the one that runs smooth. Can I upgrade from 10.5 to 10.9, or 10.10, or 10.11 directly without installing all of them?

  6. Orphyux says:

    Upgrade to 10.14.16 has removed support for my 4k external monitor. I am going to rip this upgrade out..

  7. Jose Avelar says:

    I did the update a while back and I have not had any issues.

    I have a MacBook Pro 13 with Touch Bar late 2016 model

    It installed successfully without any issues or affecting my apps, bootcamp and parallel software.

    maybe it could be the specific setup others have or a specific software they are using that is causing the issues or an older model that isn’t fully supported.

    I also have my mbp connectect to a monitor via usb c to hdmi and haven’t had any issues, also have a usb c dock.

    It’s weird how some people are having issues and are complaining before trying to find a solution.

    I recommend that everyone do a backup and try downloading the update directly and try that, or do a clean install.

    if that still doesn’t work always go to the apple forum or contact apple support.

    there is always a solution but we find it easier to complain than to try to find a solution.

    I’m an independent developer and pretty experience with both Mac OS, windows and linux.

  8. Nico says:

    Lol 😂 It always makes me laugh when people’s complaints about mac os and there updates dont work like there old systems.
    Anyone heard of the expression “If its not broken, dont fix it?”
    I would recommend to anyone toying with the idea of updating to a new OS for all the new “fancy Functions” and there system at the moment works perfectly well and everything runs smoothly.
    DONT FIX/change or upgrade/update anything!
    It will simply be unproductive to do so!

    I still running OSX 11.6. El-capitan,
    And ALL my software and hardware works perfectly as desired.

    So no need to update anything! Right!

  9. TelFiRE says:

    This c*** doesn’t work at all. “The update was not installed successfully.” … okay, what the **** do you want me to do about it? Install it successfully you ja*****…

    starting to ****ing hate Apple lately

  10. James says:

    I updated on my imac11,1 unsupported Mac. Total disaster. Fans on all time, unresponsive ages to open apps. Whereas on 10.14.6 it was running like a dream. Anyway long story short canned it and used time machine to restore to last backup before update.

  11. David says:

    I recently installed the 10.14.6 Mojave update on my iMac 14,3 (1TB Fusion Drive).

    Since that update I cannot use any of my USB 2 sticks, the Mac refuses to mount them and Disk Utility doesn’t see them either. Somehow they get corrupted when I plug them in and are not then readable on my other, older iMacs – I haven’t been game to try any of my USB 3 ones in case they get corrupted too.
    I thought maybe my USB hub was faulty but the same thing happens if I plug a USB stick directly into the back of the iMac.
    I also have two USB 3 HDD’s connected and they are working normally.

    What the… is going on?

    • nelson says:

      same here. sigh. mac is becoming the new windblows. i see that the issue has intermittently been happing with some versions 10.13.+ and my best guess is Apple wants to test the waters on disabling any other OS from running on their hardware completely. I’ve been putting off switching to Linux completely, but if I can’t dual boot…well…bye bye mac’n’crack.

  12. Expander says:

    Does this update fixed the google accounts problem with Mail?

  13. Scott says:

    Not sure if intentional or not but appears to have fixed problem I had starting with 10.14.6 where clicking on links in emails did nothing – did not open link in Safari, for example.

  14. dave says:

    changed my startup screen to a nice picture instead of Mojave desert desolation.
    this update broke it.
    unable to set my own / personalised start-up screen pic.

  15. Jay says:

    I noticed my double space bar problem is less frequent. Maybe this update addressed the annoying issue. So far so good. (I was able to type this entire sentence without double spaces *wow this is a first!)

    • ian says:

      That would be interesting and I have yet to notice that, but it would possible for a software update to address some of the keyboard failure issues if the keys are double repeating. I get double space bars constantly too on 2018 MacBook Air so I will keep an eye on this. I would send my Mac in to get the keyboard replaced but I can’t take the time to do that yet.

  16. Bryce says:

    After installing 10.14.6 my iMac (early 2012) keeps rebooting, it runs a little while then reboots. Very slow

  17. David Jones says:

    Seems the supplemental update has made FaceTime buggy and even more annoying to use than it is normally, with it’s immovable voice call status window. Now, when I try to hang up a voice call, it ignores me and simply tries to establish a FaceTime call with the caller I’m trying to hang up with.

    Apple’s software QA continues to plumb ever greater depths!

  18. Edward Melinn says:

    Didn’t work for me. MacBook Air mid 2012.

    • Paul says:

      What happened when you tried to install the supplemental update? Any error?

      It installed fine on my MacBook Air (2018), it took a bit longer to install than a typical supplemental update however.

  19. old mac grump says:

    Can’t help but wonder where they’re heading with the OS. Take the nicknames of the modern OSes in order: Mavericks, Yosemite, El Capitan, Sierra, High Sierra, all pretty cool places in California.

    Then comes Mojave. ugh. Who the hell wants to go to a freakin’ desert? And now “Catalina”…that’s like “Huh?” It’s a crappy island off the coast of LA. Not one of Cali’s better attractions.

    What’s next? Mac OS X 10.16: BakerTucky ?????

  20. Pablo Gallardo says:

    This update has a big bug for x11 (xquartz). programs on x11 run laggy and almost unresponsive. DO NOT UPDATE

  21. Saurabh says:

    The supplimental update didn’t work Mac still won’t wake up after a night sleep

  22. Ron says:

    Sigh, we bought Macs to just avoid an avalanche of unexpected updates known from Windows. Now it starts here also… quality check, anyone? 😕

    • Will says:

      Ron, I totally with your opinion of MS updates. I’ve been away from Windows for years now and don’t miss that “avalanche” of updates. Apple really not bad when compared to MS but yes it’s a tad bit inconvenient to update however better than the alternative. Having coded for decades (damn that makes me old) I can tell you it’s impossible to test everything against everything but Apple does a damn fine job compared to others mostly because of their “closed” hardware environment that MS doesn’t have. That’s my 2-cents anyway. Take care.

  23. Emil Romberg says:

    Since first 10.14.6 update and also with this supplemental update all SDL 1.2 applications crashing the WindowServer when the where are closed and they where in full screen mode before. At least on my MBA with a Intel HD Graphics 6000. I assume the mapping from OpenGL (used by SDL 1.2) to Metal (used by CodeDisplay) is not working correct between CoreDisplay and the Intel Graphics driver on this device.

  24. Steve Wallace says:

    After downloading, when opening a link, it opens in double tabs.

  25. Gonzalo says:

    After installing this supplemental update (an upgrade from the base 10.14.6 version, I believe) on my Macbook Pro, the mid-2012 15-inch Retina version, when the startup progress bar beneath the Apple logo is around three quarters full the screen goes blank; thirty minutes in, the machine is warm and there is no progress to be seen. Force-stopping the machine and disk scanning from the recovery mode shows no problems. I have yet to try NVRAM and SMC resets, as well as being even more patient in case it wakes, but this doesn’t bode well. Any suggestions or any experiences upgrading this computer model?

    • Declan MacCloud says:

      Did the system update get interrupted? You say ‘force-stopping’ like you turned off the computer in the middle of a software update? It’s never a good idea to stop a software update in the middle of it, it can cause problems. It may take longer than 30 minutes to complete, I’d let it sit until it completes or is either obviously not working at all after hours go by.

      If your Mac won’t boot now normally you might need to reboot into Recovery Mode and reinstall macOS. You can do that atop macOS without doing anything else.

      If that doesn’t work you might need to restore the entire Mac from a backup.

      • Gonzalo says:

        I might be a little trigger happy with this system due to its history of getting completely screen-frozen. Given the estimate installation time I last saw, a few minutes worth, I think I left it quite a bit of margin to respond after noticing the blank screen, though I would best leave it overnight next time to feel free of guilt. Luckily, the non-destructive reinstallation option you mentioned worked and saved me the time of restoring from a backup; thanks for your advice. The system is now running the latest version, so it’s a happy ending despite the botch, human prompted or otherwise. Cheers!

      • Gonzalo says:

        I might have been a little trigger happy with this system due to its history of getting completely screen-frozen, though given the estimate installation time I last saw, a few minutes worth, I think I left it quite a bit of margin to respond after noticing the blank screen; next time, I would best leave upgrades to happen overnight so there’s less room to feel any guilt. Luckily, the non-destructive reinstallation option you mentioned worked and saved me the time of restoring from a backup; thanks for your advice! The system is now running the latest version, so it’s a happy ending despite the botch, human prompted or otherwise. Cheers!

      • Arshia says:

        Hi I have same issue and I need my file my time back up for 80 days before
        And I can’t recover my file
        I did not even mount my drive with live linux did you have any suggestion for me to recovering?

    • Paul says:

      I recently had this startup behavior once on a new iMac, but that was before the supplemental, which I have not yet installed.

      • NT says:

        I installed the supplemental update to 10.14.6 the other day without incident. It does take a long while to update and install, and the screen flickered black with white square blotches on it a few times, so I don’t know what it’s doing, perhaps it is providing a firmware update. Several reboots later and it was up and running, using the Mac now. This is a 2018 MacBook Air just for reference.

        FWIW macOS 10.14.6 also took a long time to install, about an hour for me on this Mac and I used the combo update. The updates are getting bigger and taking longer to install in my experience.

  26. Jeff Hall says:

    Supplemental Update for macOS Mojave 10.14.6 Released….
    I’ve noticed that My MacPro 5.1 now goes to sleep and wakes up as per normal.
    There’s always been the folders/tabs problem. In Finder preferences either selecting or not selecting ‘Open folders in tabs instead of new windows’ made absolutely no difference – they always opened in tabs. This is now fixed.
    Also the spat between Apple and Nvidia regarding CUDA drivers for some of their Graphics Processing Units GPUs seems to have been resolved. Today I reinstalled a Nvidia GeForce GTX 770 which now seems to be working perfectly. In System Report (via Apple Menu) Graphics/Displays now says Metal: Supported, feature set MacOS GPU Family1 v4. My LED Cinema Display is operating perfectly for the first time since about OS 10.14.3.

    One other point:- Between OS 10.14.3 and OS 10.14 4 I assess that Core Audio was given a make-over. For the past 2 years I’ve been chasing for a reason why something was causing the output of the left channel in my production studio to not be entirely equal in level and quality to the output of the right channel. This was fixed for my MacPro and my iMac with that upgrade.

  27. Brian Harmer says:

    Hugely disappointed that it doesn’t resolve the issue that many users have in which the external monitor does not wake up after sleep. I never had a problem with the iMac itself, only the external monitor. Sadly my external screen remained dark after the system rebooted at the end of the install

    • Tiernan says:

      What happens? Can you share more? Because that sounds problematic, I use an external monitor and a sleeping MacBook Pro about 5 times a day, for every working day of the week. Surely Apple has employees who use computers with external monitors too?

      I suppose it’s a good thing I’ve lingered my main work Mac with Sierra for so long, it’s stable enough and works, even the likely final release of Mojave is that buggy and I have issues with it on my other Mac which is still on 10.14.5 as I have come to learn wait several weeks before doing software upgrades. Then there’s the Catalina which is so buggy right now as developer build and without 32-bit support and all the new lockdown system folder and annoying security stuff I don’t think I’ll bother with that anytime soon either.

      I worry that Apple is trying to make the Mac into an iPad, which nobody wants except maybe two people on Twitter and you probably know exactly who I’m talking about if you follow Apple Twitter at all.

    • Mark says:

      I’ve heard this is specific to USB-C (DP and HDMI have no issues).

      • Paul says:

        My new Mac Mini combined with a gorgeous LG monitor has had this problem with both HDMI and USB-C connections. I thought I’d got rid of it by switching off the monitor sleep setting (seemed to be a loss of sync in that situation), but it happened again today (USB-C) when the Mac took a little snooze.

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