The macOS Installation Couldn’t Be Completed? [Solution]

The macOS Installation Couldn't Be Completed

The procedure of updating the Mac operating system is easy and error-free. Updating your device to the most recent version protects your system, improves speed, and fixes bugs, all of which contribute to a better overall experience. However, several Mac users have reported receiving the message “The macOS Installation Couldn’t Be Completed.” As a consequence, your device could get the latest update.

How do you fix this problem? Follow the solutions listed below. Don’t be concerned; you can quickly get rid of it.

Make A Backup Of Your Data In Advance

To avoid any mishaps, make a backup of your data before attempting to resolve the installation issue. You can copy your essential files to a USB device or back up your data to an external hard disk.

Later, If your Mac becomes locked due to the “The macOS Installation Couldn’t Be Completed” issue, you can recover important files using third-party professional Mac data recovery software.

Check Compatibility

Before continuing the troubleshooting methods, double-check that the most recent macOS version is compatible with your machine. Go to the App Store and search for the macOS version you want. Please scroll to the Information section after clicking that app to access its information in the App Store. Under compatibility, the App Store informs you whether or not the app is compatible with this Mac. You won’t install that macOS version updates on your Mac if it isn’t consistent.

How To Fix The Error “The macOS Installation Couldn’t Be Completed”

A failed macOS update can be frightening. However, it is not too difficult to repair. You’ll be up and running in no time if you follow the instructions below in the proper order.

Restart Your Mac

In most cases, restarting your Mac is all that is required to resolve the problem.

Restart your computer by going to the Apple menu in the upper left corner of the screen and selecting Restart. Press and hold the Power button to force a shutdown if your Mac is operating slowly. Laptop users can access the following settings by pressing the Control and Power buttons simultaneously; Do this while the installation is running since it may corrupt operating system data

Note: It’s conceivable that the date and time on your Mac have been set wrongly. Navigate to System Preferences and then Date & Time. Tap the Padlock. Enter your administrator password when asked. Select the Set date and time automatically option to modify the date and time.

Safe Mode Is Activated

Starting your Mac in Safe Mode is the first step in fixing “The macOS Installation Couldn’t Be Completed.” Safe Mode is the default setting. Disables specific applications from relaunching, including the macOS installer. It also clears the cache and other temporary files; in some cases, booting into Safe Mode is required to resolve issues.

If you’re unable to upgrade your macOS, going to Safe Mode should suffice. Here’s what you should do:

For Macs with Intel processors:

If you have an Intel-based Mac, you can enable Safe Mode by following these steps:

  1. Turn off your Mac and wait for around 10 to 12 seconds.
  2. Restart your Mac while holding down Shift, then let go of the Shift key when the Apple logo shows on the screen.
  3. You may be required to log in.  Tap the “Safe Mode” button in the upper-right corner of the display. After you’ve entered Safe Mode, try updating macOS again.

For Apple Silicon Macs:

If you use a much older Mac that still utilizes an Apple Silicon chip, you may need to use a different technique.

  1. Shut down your computer or another electronic device. Press and hold the power button until a menu with boot options appears, then let go.
  2. Then, using your keyboard, choose the starting disc. In Safe Mode, hold down the Shift key and hit Continue, then release the Shift key.

Enter Recovery mode

If Safe Mode does not help you address the problem, it may be necessary to Enter Recovery mode. To resolve the installation problem, we will use Mac’s First Aid Disk Utility function.

  1. Turn off your Mac. Restart your Mac while holding down the Command + R key.
  2. When it boots, select Disk Utility from the macOS utility menu. Choose the “First Aid” option.
  3. Disk Utility will scan your disc for errors and fix them if any are found. Reinstall the macOS update when your Mac’s disk has been fully recovered from issues to see whether the problem persists.

If you’re one of the individuals who keeps getting this issue, your macOS installer has likely become corrupted. Users should discard the installer and replace it with a newer one. We recommend that consumers download it from Apple’s official support page. It will ensure that you obtain the real version of the installer rather than the miniature version if you use the system settings or the App Store.

Reset the PRAM

The last option is to perform a PRAM reset. PRAM is in charge of storing your Mac’s numerous settings and preferences. It preserves screen brightness, loudness, resolution, and other settings. If there is a problem with the PRAM, it may cause installation issues. To clear the PRAM, follow these steps:

Reboot your Mac and   Hold down Command + Option + P + R as soon as you hear the boot sound. The PRAM should be reset the next time you hear the boot sound. Give time for the Mac to start up. Now update your Mac.

Why Couldn’t Macos Be Installed On Your Computer?

There are several reasons why a macOS installation may fail. Hopefully, the error window specified the nature of the problem. You’ll know where to direct your troubleshooting efforts as a result. Here are some of these reasons:

  • Files in the macOS installation got corrupted.
  • You don’t have enough free space on your Mac 
  • You have a problem with your startup disc

To Wrap It Up

Keeping your computer up to date is critical! We hope that you will address the Mac installation issue and upgrade your device without difficulty by following the steps outlined above. Contact Apple if your machine does not return to standard functionality.


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