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  • Oct 27, 2018  If regularly use a Mac with an Apple SuperDrive or other DVD player, you may be wondering where the DVD Player app went in macOS Mojave, and perhaps you have arrived at the conclusion that it’s missing since it’s no longer visible in the /Applications folder or Launchpad. It’s not missing however, it turns out the DVD Player app has just been relocated to sit alongside some other buried.
  • Siri window freezes at launch; Night Shift doesn’t function correctly; News app crashes at launch; Finder freezes at launch; These issues may soon be resolved by Apple, so keep an eye on software updates in the Mac App Store. As Mojave troubleshooting tips pop up across the net, we’ll add them to this article.
  • Nov 03, 2018  Launch the “macOS Mojave Patcher” app. By default, macOS preventing apps from unidentified developers or sources from being launched. So you most likely will get an alert message that says: “macOS Mojave can’t be opened because it is from an unidentified developer”.

Oct 15, 2018  I have a 2012 MacBook Pro Retina (1st year of retina) 15'. Whenever I try to start the Mojave installer nothing happens. I couldn't start it while running High Sierra, so I made a bootable USB and booted from that and it still won't start the installer. Literally nothing happens when I hit the continue button. The button goes grey and that is it.

When macOS Mojave was announced, Apple warned that it would be the last version of macOS that would support older 32-bit apps. Apple has been phasing out 32-bit apps for the last 10 years and is now ready to take the final step, even if Mac users may not be ready to lose access to older apps.

With the release of macOS Catalina, 32-bit app support is no longer available, which means many of your older apps will no longer work if they haven't been updated to 64-bit.

32-bit vs. 64-bit

32-bit apps date back to a time when there were 32-bit processors and 32-bit operating systems, but are now outdated. Apple has long since transitioned to 64-bit processors and macOS has been 64-bit since the launch of Snow Leopard in 2009.

Compared to 32-bit apps, 64-bit apps can take advantage of more memory and offer faster system performance. Apple technologies like Metal only work with 64-bit apps, and for Apple to ensure that Mac apps include all of the latest advancements and optimizations, support for 32-bit needs to end. Kodak scanner software for mac. In the simplest terms, 32-bit apps are inefficient.

32-bit apps can run on a 64-bit system as they've been doing for years, but Apple wants to get rid of outdated apps to make sure everything that runs on the Mac is properly optimized and isn't an unnecessary drain on system resources.

Previous Warnings

Apple started warning Mac users about plans to end support for 32-bit apps back with macOS High Sierra. In High Sierra, users started getting warnings about a 32-bit app's future incompatibility with macOS.

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A similar message was available in macOS Mojave, and if you opened up a 32-bit app while running Mojave, you saw an alert letting you know a specific app wouldn't work with future versions of macOS unless it was updated.

Alerts re-appeared every 30 days when launching an app, with Apple aiming to make sure customers would not be caught unaware when a 32-bit app stopped working in the future, so you should already know if one of your frequently used apps hasn't been upgraded to 64-bit.

App Won T Launch Mac Mojave 2017

Upon updating to ‌macOS Catalina‌, you'll be shown a list of 32-bit apps that no longer work on your system.

How to Check if an App is 32-Bit or 64-Bit in macOS Mojave

To determine whether an app is 64-bit or 32-bit and to see if there are 32-bit apps installed on your machine before upgrading to ‌macOS Catalina‌, follow these steps:

  1. Click the Apple symbol () in the menu bar on your Mac's desktop.
  2. Click on About This Mac.
  3. Choose 'System Report' at the bottom of the window.
  4. Scroll down to the Software list on the sidebar.
  5. Select Legacy Software.'

Anything in the list of Legacy Software applications is a 32-bit app and will not work when upgrading to ‌macOS Catalina‌.

If Legacy Software isn't an option in the sidebar, select the Applications option and then check the list of apps at the right. The column that's labeled 64-bit will show a 'No' listing for apps that are 32-bit.

How to Prepare to Update to ‌macOS Catalina‌

The first step is to make sure there aren't already available updates for apps that you have on your system, which you can generally do by updating through the Mac App Store for ‌Mac App Store‌ apps.

Apps outside of the ‌Mac App Store‌ use other update methods that can vary by app, but for many, you can click on the app's name in the menu bar and choose the 'Check for Updates' option. Some other apps have more hidden update methods, so if you do have a 32-bit app, make sure to Google how to update it to be sure there's not already new software available.

After ensuring you've updated everything you're able to update, you can contact developers and ask them to update their apps, but if that doesn't pan out, the only other solution is to start the search for an alternative app if you're committed to upgrading to ‌macOS Catalina‌ or have already done so.

32-Bit App Warnings When Installing Catalina

When upgrading to ‌macOS Catalina‌, the installer will show a list of recently used apps that are 32-bit so you know what to expect before installing.

After viewing this list, you can choose to either cancel or continue with the installation.

‌macOS Catalina‌ also shows a stop symbol over the icon of 32-bit apps in the Finder, so you know that the app isn't going to open.


With the release of ‌macOS Catalina‌, Aperture is going to stop working. Apple warned Aperture users in April 2019 that the software won't run in future versions of macOS, starting with ‌macOS Catalina‌.

If you're an Aperture user, you'll have to transition to alternate photo editing and management software, such as Adobe's Lightroom. Aperture is not 32-bit, but Apple is phasing it out all the same.

Affected Media Formats

Certain media files that use older formats and codecs are also not compatible with macOS after macOS Mojave due to the 64-bit transition, and you will need to convert some iMovie and Final Cut Pro X libraries. Incompatible media files were created using codecs that rely on QuickTime 7, and while macOS Mojave has QuickTime 7 frameworks, future versions of macOS will not.

Apple has a full list of media formats that are going to be affected by the transition available in a support document.

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Continuing to Use 32-Bit Apps

In macOS Mojave and earlier versions of macOS like High Sierra, you can continue to use your 32-bit apps. If you have a 32-bit app that you absolutely depend on, you're going to want to think twice before upgrading to ‌macOS Catalina‌.

Guide Feedback

Have questions about the end of support for 32-bit apps or want to offer feedback on this guide? Send us an email here.

Deserts have replaced the mountains and Apple will soon let the all-new macOS Mojave 10.14 out into the wild. We already predict millions of users calling it Modjave or Mojared or Mojado—well done, Apple.

Besides naming, the OS is really solid. It has some long-anticipated goodies like Dark Mode, which paints all of your interfaces dark-grey and gives them a bit of an upper-class feel. The new organized desktop feature automatically groups files into folders and keeps your screenshots in one place—not scattered all over the screen, thank you very much.

A couple of iOS apps have migrated to Mac, like News, Stocks, and Home (though Apple still denies merging desktop with mobile). There’s also soon-to-be Group FaceTime and a completely redesigned Mac App Store, making the system upgrade well worth it.

Here's a short video on how to fix most common Mojave issues with apps:

All known macOS 10.14 Mojave issues with suggested fixes

Like most fresh updates, macOS Mojave promises to misbehave in the first few months until most bugs have been ironed out. We’ve summed up the most common issues and their proposed fixes in this article and hope it might help when you encounter them.

Mojave fixes in a single pack

Here's all you need to keep your macOS in a good shape. Grab the best utilities to fix Mojave problems.

Issues with macOS Mojave installer

What's wrong:

  • The upgrade is unavailable or crashes and the download does not proceed.
App Won T Launch Mac Mojave

What to do:

  1. Make sure you’ve completed a pre-installation backup. To backup your Mac, you can use the basic Time Machine app or a more advanced piece of software, like Get Backup Pro. If you’re unsure of how to do it, read more on how to backup your Mac.
  2. If the download doesn’t start, doesn’t finish, or crashes along the way—restart your Mac. Restarting is truly the apple a day of the tech world.
  3. If restarting doesn’t help, try giving your system a bit of a cleanup, doing away with app caches and overall system junk. CleanMyMac X should get the job done.
  4. After cleanup, try downloading your new OS again.

macOS Mojave error during or after the update process

What's wrong:

  • macOS Mojave freezes during installation
  • Mac doesn’t finish installing the update
  • or Mac doesn’t launch at all when it's done.

What to do:

  1. Restart your Mac.
  2. Press and hold the Shift button after you hear the startup chime.
  3. You’ll enter what’s called Safe Mode. It’s a barebones version of your system that should isolate any issues. While here, try to reinstall the OS

Dark Mode doesn’t seem compatible with some apps

One of the main issues you might notice upon switching to the highly-anticipated Dark Mode is that some apps are clearly not ready for it. Custom interface elements in these apps were created to fit the old light mode and now look unsightly at best and perhaps unusable at worst.

Unfortunately, there is no real fix for this until developers start to roll out updates with improved Dark Mode support. Some devs are on the ball and have made it so that their interfaces automatically switch with your system preferred theme. Other apps may include the ability to switch, but you’ll have to do so manually within individual app settings.

At this point, for apps that are a bit behind the times, give developers a hand by sending a screenshot of the issue their way via feedback form or by contacting their team directly. Look for an email address at the bottom of the app’s site.

Image previews don't show, display icons instead

In case after the upgrade your Finder started to look like this, with all the images and documents suddenly losing previews and simply showing the icon, worry not. It's common and it's fixable.

First, you need to get the app to fix it, it's CleanMyMac X, the one we mentioned before. It's quite versatile in terms of its functionality, and one of the great features it has is Maintenance Scripts. Open CleanMyMac, find Maintenance on the left, and choose to run Maintenance Scripts. The pictures should be in order after that. You can also clean system cache just in case with the System Junk module.

Battery drain on Mojave

macOS Mojave is a relatively lightweight update, yet it still manages to syphon quite a lot of battery life from your Mac. If you’re on an older model, circa 2009-2011, there’s a chance you’re looking at decreased battery performance.

How to fix battery life problems on macOS 10.14?

Some users have reported Safari and Chrome browsers to be particularly greedy in this manner. There may be a way to tackle the problem in Safari by turning of analytics reports. This is easily done by opening System Preferences > Security and Privacy > Privacy > Analytics and choosing not to share your data with Apple. Though seemingly minimal, less data traffic from your laptop means less the battery has to juggle.

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Another way to peek at what’s draining your battery is to use iStat Menus or Endurance. iStat Menus can identify what’s loading your processor and help visualize how your Mac is doing in general. Endurance can help your battery last longer with a special power-saving mode that activates when a Mac has is running out of juice. Both apps are available via Setapp service with a free trial, so you don’t need to purchase them individually.

App Won't Launch Mac

Apple store doesn’t connect with a US iCloud account on macOS Mojave

This has been reported multiple times and the fix was hidden in Release Notes during the developer beta stage. If you have an American iCloud account and experience issues logging into the new App Store, try this:

  1. If App Store is running, quit the app.
  2. Open the Terminal (you can search for it using Command-Space).
  3. Copy and paste this: defaults delete
  4. Run the command.
  5. Open App Store, sign in, and hit retry a few times.

Uncommon bugs without available fixes at the moment

Here are some further noted issues with Mojave:

  • Safari does not display videos in full-screen
  • iTunes crashes at launch
  • Siri window freezes at launch
  • Night Shift doesn’t function correctly
  • News app crashes at launch
  • Finder freezes at launch

These issues may soon be resolved by Apple, so keep an eye on software updates in the Mac App Store. As Mojave troubleshooting tips pop up across the net, we’ll add them to this article. Hope this has worked out some kinks—enjoy your beautiful new macOS!