macOS installation keeps failing with “The macOS installation couldn’t be completed”
I’m hoping someone can point me in the right direction because I’ve been stuck on this for a while.
I was trying to update my MacBook Air to the latest version of macOS, but every attempt ends with a message saying that the macOS installation couldn’t be completed. The download seems to finish normally, and the installation starts, but after a restart it eventually fails and takes me back to the same error screen.
I’ve already tried restarting the Mac, downloading the installer again, checking that I have plenty of free storage, and running First Aid from Disk Utility. None of those have made a difference.
What’s confusing is that the Mac works normally otherwise. I haven’t installed any unusual software recently, and there haven’t been any hardware changes. The issue only appears when I try to install the update.
Has anyone run into this before? I’m wondering if this is usually caused by a corrupted installer, a disk issue, a network problem during installation, or something else entirely.
Any suggestions would be appreciated. Thanks!