It may be because a lot of people are trying to download macOS Big Sur at the same time. There are a few reasons why you may encounter this issue.

That content can’t be downloaded at this time. Installation requires downloading important content. A few get the following error message: “Installation of macOS could not continue. Others, on the other hand, are seeing 'The network connection was lost' error messages when they try to download macOS Big Sur. One of the most common macOS 11 Big Sur problems that people have encountered is that macOS 11 fails to download, with some users seeing an error message that says 'Installation failed.' How to fix macOS Big Sur download problems For those of you sticking with us, let's take a look at the most common macOS 11 Big Sur Problems and exactly how to solve them. Or, if you’re ready to take the leap to the next OS, check out how to download macOS 12 Monterey. If you haven’t grabbed Big Sur yet, take a look at our how to download and install macOS 11 Big Sur guide.

Why imac keeps freezing