Of course, there are also some other causes like the installer is corrupted, the system disk crashed, and more. Such situations include power failure, battery dead, and computer force shutdown. When the macOS installation is interrupted unexpectedly, this situation can easily happen. The following screenshot is a real example from Reddit. It just stops you from installing the macOS successfully.

The macOS installation couldn’t be completed is another common situation that happens during the macOS update process. Situation 4: The macOS Installation Couldn’t Be Completed You need to quit the installer and then restart your Mac to try to update your Mac again. The following message just shows you the reason: a certain path is missing or damaged. Situation 3: macOS could not be installed on your computerĪnother phenomenon is that you can’t install the new macOS on your computer and only receive an error message saying macOS could not be installed on your computer. You need to restart your Mac to remove these errors. There are likely some temporary errors on your Mac. Hold down the Power button for several seconds, or press the Restart button. Situation 2: You Need to Restart Your Computerĭuring the macOS update process, your Mac can also boot into an interface with error messages of four or five languages: You need to restart your computer. However, if you still can’t update macOS after Max reboot, you need to think about other possibilities like disk errors, macOS update interruptions, etc. You still need to wait patiently until the whole process ends. Your Mac can’t be used until this update is installed. Your Mac doesn’t boot up normally, with an error message saying A critical software update is required for your Mac, but an error was encountered while installing this update. In most cases, you just find you can’t update your macOS when it’s time to boot your Mac. Situation 1: A Critical Software Update Is Required for Your Mac Here we will show you some common symptoms and reasons. Many Mac users are facing the same problem as you. Then, you will ask: why can’t I update my Mac or why won’t my Mac update? When you want to update your Mac to the latest version, you may find that you can’t update it successfully. Besides, it also introduces a Mac file recovery tool to rescue your Mac files when needed. If your Mac won’t update, you will ask: why can’t I update my Mac? Now, MiniTool Software will show you different symptoms, reasons, solutions. When you update your macOS, you may find the process is not smooth.

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