Typically, a macOS download fails if you do not have enough storage space available on your Mac.
If it has a green dot, then there's no issue, but other colors suggest there's a problem with Apple delivering the update.Īs you can see from the screenshot above, there had been issues with the software update at the time of writing, which have since been resolved.Īnother reason could be that you simply do not have enough space on your computer. There should be a section labelled 'macOS Software Update'.
