5 common macOS Mojave problems and how to fix them

We have updated this article with more fixes to macOS Mojave problems. Make sure you check out our article: macOS Mojave problems and how to fix them

At this year’s WWDC event, Apple officially announced macOS Mojave, the next version of Mac operating system. Basically, macOS Mojave comes with a lot of new features while revamping the existing ones. With macOS Mojave, Apple brings some new features we have been expecting for years, like dark mode, iOS apps for Mac, and a revamped Quick Look.

Apple has started rolling out the first beta of macOS Mojave to developers for testing purposes. The Cupertino company has not specified the release date of macOS Mojave. But, sources say that the new macOS update will launch to the public in September alongside Apple’s new iPhone models.

The first beta of macOS Mojave has been around for a few days, but we have started to hear some of the issues Mac owners are facing with the new macOS update. With that in mind, we are here to help.

In the section below, we have created a list of the most common macOS Mojave problems and how to fix them. Before we begin, note that macOS Mojave is now available as a beta version for developers, so it may include some errors and bugs that ruin your experience. If you don’t have a developer account, we recommend you wait for some time until the final build releases.

  1. Installation problems

Like any other major software update, macOS Mojave has some problems when it comes to the installation process. A lot of Mac owners have reported that they cannot install the beta version of macOS Mojave on their device. They claim that they get a pop-up message saying that macOS could not be installed on your computer.

If you are among those users who have been hit by the issue since the day one, then close the installer and re-install the update. If nothing changes, make sure you restart your computer and then try again.

If the problem still persists, then the last hope for success is to restore your Mac to a macOS High Sierra backup and then perform the update. If you are not sure if it works, then make sure you stay with macOS High Sierra for better user experience.

  1. Apps not working in macOS Mojave

macOS Mojave is Apple’s latest version of macOS operating system, with a lot of changes. The new version of macOS is now available in beta stages, which means that Apple is still working on the update.

A number of Mac owners have confirmed that some of their favorite apps fail to work after updating to macOS Mojave. If you are dealing with the issue, then try restarting your Mac and then re-launch the app. If the problem still persists, then uninstall the app, then head to the Mac App Store and re-install it.

Some apps that are not working on macOS Mojave includes Evernote, Cocktail, PowerPhotos, CleanMyMac 3 and more. Third-party developers are updating their apps so they work on macOS Mojave. It seems that Apple has a lot of work to do to make sure everything runs smoothly at launch.

  1. Bluetooth problems

Bluetooth not working is one of the most common issues when Apple releases a new software update. And macOS Mojave is no different. A number of Mac users are complaining that Bluetooth is not working on macOS Mojave.

If you run into the problem, then try removing the Bluetooth plist file (it is usually located in Library/Preferences). Make sure you make a copy of com.apple.Bluetooth.plist before deleting it. After that, restart your Mac and then enable Bluetooth on your device to see if the problem is fixed.

  1. Crashing at login

A lot of Mac owners have reported that your Mac crashes at login, which prevents them from accessing their files. To fix this problem, the first thing you need to do is to boost your computer into safe mode.

To do this, restart your Mac, and while your Mac is rebooting, make sure you hold the Shift key and release it when you see the Apple logo. This will put your Mac into safe mode. Once you are in, head over to System Preferences, then select Users & Groups and click Login Items. Now just simply uncheck items and restart your Mac in normal mode.

  1. Freezing and performance problems

A software update usually comes with performance improvements. However, a number of Mac users claim that they are experiencing slowdowns after updating to macOS Mojave. To fix it, you first need to update all of your apps, then check if an app is acting weird on your Mac. Now just simply restart your Mac.

Also read: wachOS 5 features: What we know about Apple Watch 4

Got any questions? Let us know in the comments below.

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33 thoughts on “5 common macOS Mojave problems and how to fix them”

  1. You should probably add this to the article, but in any case —

    If anyone is having an issue wherein System Preferences crashes, here is a simple solution I discovered that works on my mid-2015 15″ MacBook Pro:

    Finder Approach:
    1) Navigate to Applications and right-click on “System Preferences”
    2) Click on “Show Package Contents”
    3) Expand Contents, then MacOS
    4) Double-click on the System Preferences icon that looks like a terminal with a little green “exec” label
    5) If it works, then drag that icon to your desktop (or wherever) to create a shortcut to it and then use that to launch System Preferences from now on.
    6) Don’t forget to close the terminal emulator window that will pop-op when using this method.

    Terminal Approach:
    1) You don’t even have to be root, but just do the CLI equivalent of the above.

  2. ‘After that. restart your Mac ‘

    Why is there a full stop in this sentence?

    Why do so many, many, many on-line articles like this have multiple errors? Is because they are written on mobile devices, with tiny screens, by people in a tearing hurry to be firstest-with-the-latest and be-damned to accuracy?

    Or has texting baby-talk reduced written English to the level of whateverdom?

    Do you even edit?

  3. Hi since loading Mojave on my mac desktop it won’t allow me to use my password ?
    Does anyone have the same problem or can someone help me?

  4. i just installed mojave on mac mini. random times, the picture is distorted. an o turns into an oval, huge, long faces on people and it is too dark! now i have two devices that don’t work because of updates. what to do? i am shopping for a windows machine. i am sick of apples planned obsolescence. i have eight macs and because apple seems to want to keep people buying new, my computers cannot share info, photos and music are lost when power supply dies but gosh, the hard drive doesn’t fit the newer years. i threw thousands away on g3,g4s that work fine but are not compatable. can’t stream anything without an intel processor. disowned for years, no support for those machines. you can take a twenty year old windows machine that will work along with the new models. not mac… just have had it with apple. jp

  5. I have had a recurring problem where iPhoto launche w/o being prompted and refuses to close. It will not close even when Force Quit is used. After unchecking the box in the shutdown box that stops all your apps from relaunching on startup, and restarting the problem goes away. But it has come back a couple of times.

  6. PowerPoint and Word have both forgotten all of my “recent documents”. I also had PDF fail as well and reinstalled from Adobe it works sometimes. Suddenly I have email problems with Outlook which worked fine before the instal and the problem spans across all of my accounts and not just my main email address so I don’t think it is an ISP issue. Heretofore, my experience with the Mac has been very positive; to the point where it never occurred to me to read reviews on the new OS before installing it. Normally, I do an update and things work better, not worse. I have done lots of work since the OS update so dropping back in time machine will mean I lose all of the work done between the install and the time machine restore wouldn’t it? I guess I could search every doc on the computer and save off anything before the time machine restore date and then try to put them all back in the right folders. Hmm, seems like that was the kind of thing that talked me into a Mac in the first place – I was tired of having to pretend to be an IT guy slaved to my Windows machine.

  7. I’ve had so many problems with Mojave that I want to get rid of it. If I uninstall it, will my computer automatically switch back to the previous operating system?

    If not, how can I accomplish switching back to Sierra?

  8. if you are a music producer or record with Logic Pro X…DO NOT UPGRADE YOUR OS TO MOJAVE! ITS NOT WORTH SCREWING UP YOUR WORKFLOW!

    i had a session today where i had a multi instrument track stack being played with an electronic drum kit and on and off the audio sounded fine and then i would have sections where it sounded completely distorted. at first i thought it was my cable but it had absolutely nothing to do with cables or ins and outs. its something to do with the new mojave and the new logic pro. its horrible. apple you really need to step your game up. you might think you’ve won the hearts of hipsters and tech people but lets be real…anyone tech related / gamer related / editor related is 9 times outta 10 going to be on a custom PC. change your ways to change peoples minds. end to end compatibility is BS. planned obsolescence is BS. and making it so we cant work or upgrade our own computers without the help of the “genius bar” is completely BS. this is why i have a late 2012 mac mini lol the last year you could upgrade your own ram/hd/anything relevant. thought for food. rant over…

  9. My mouse cursor becomes frozen in addition to problems with the keyboard. You would think that an operating system would be tested before being foisted upon the unsuspecting (perhaps suspecting public)? The Sierra OS was better for me.

  10. I have a mac-mini 2014, was running great on High Sierra.

    I upgraded to Mojave 2 months ago, and now the wireless mouse freezes a few times a day to the point the computer is not useable.

    Hey Apple, do you think a NEW Mac $2,500 would fix this issue?

  11. After installing Mojave on my iMac, at shut down there’s a black square in the upper left hand corner, and the other day the screen had the black square and the screen looked like it was all jagged lines. I’m not sure what this means or what to do. Any ideas?

  12. My iMac loses network connectivity after 10-15 minutes in email and web browser (WiFi and ethernet). Only want to get network back is to reboot. Then same thing again. Spent several hours in Apple store yesterday trying to get the problem resolved. Gave me several suggestions to try — none worked.

  13. having a problem with Apple mail….. is anybody else having this problem.. deleted and reinstall the accounts…. problem persist…. any suggestions.

    • Can you specify which Mail-related issues you are facing? Or We have updated the article with more fixes to macOS Mojave problems.

  14. Photos no longer works with this recent update on Mojave. It keeps saying it needs to repair my library. All my photos are on an external hard drive and I can’t access them. When it tries to repair the library it gets to about 43% and doesn’t advance. Need help accessing or making the photos app open the library on my hard drive.

  15. Kindle for Mac updated with ‘fixes’ to bug and now it won’t launch, crashes, on Mojave when it worked prior to being updated.

    Crashed Thread: 0 Dispatch queue: com.apple.main-thread

    Exception Type: EXC_BAD_ACCESS (SIGSEGV)
    Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000068
    Exception Note: EXC_CORPSE_NOTIFY

    Termination Signal: Segmentation fault: 11
    Termination Reason: Namespace SIGNAL, Code 0xb
    Terminating Process: exc handler [814]

    • Hi Christine, have you tried launching it onto another computer? Just so we know if the problem is coming from the Kindle itself or if it’s a compatability issue with Mojave and Kindle

      • Yes. It worked on Mountain Lion (before updating to Mojave) and it works on Sierra on a different computer.

        Kindle for Mac will not run properly and there is a shortcut and the dmg runs instead of the application (and Amazon as the third party was of no help). Reinstalling from the Apple App Store leads to the iOS versions, not Kindle for Mac, so you have to download it from Amazon. Now upon launching the computer it loads as if it’s a mounted disc that I have to close every time I don’t wish to use the application.

  16. Kindle for Mac will not run properly and there is a shortcut and the dmg runs instead of the application (and Amazon as the third party was of no help). Reinstalling from the Apple App Store leads to the iOS versions, not Kindle for Mac, so you have to download it from Amazon.

    .mkv files which had thumbnails now have the DIVK logo as a thumbnail and DIVK as the default application, but upon launching it fails to run. It worked on Mountain Lion 10.8.5 just fine or I could select the default to always run Mac Media Player and the thumbnails would be proper ones. I don’t know what happen or what changed. A week ago the .mkv files look fine as did the thumbnails and they played in my default media player of choice.

    I’m still having battery drain issues when unplugged my perfectly good battery that was running fine on Mountain Lion 10.8.5 now runs down quickly and I’ve done all of the 15 different steps one can do to correct this to improve performance.

    If Apple is not able to NOT break something with EVERY OS update, they should have continued to support Mountain Lion. My other MacBook is running Sierra and I hate it more than Mojave but at least the battery is not being drained and my third party applications work properly.

  17. Mojave will no connect to any USB 2.0 Audio devices, the centre of my MoGraph and Audio business. It’s also not fixed the ongoing 2 year issues with the lack of drivers for the built-in NVidia 750M graphics hardware.

    It’s taken down my entire business, yet again. I’ve been with Apple since 1994, and they’ve become one of the most evil companies on the planet. Monsanto never cost us this much aggrivation.


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