Mac Os Won't Download Update

MacOS Big Sur elevates the most advanced desktop operating system in the world to a new level of power and beauty. Experience Mac to the fullest with a refined new design. Enjoy the biggest Safari update ever. Discover new features for Maps and Messages. And get even more transparency around your privacy. Coming this fall. Cancel the download, stop the Mac update You might be able to cancel the download, but the method will depend on what version of macOS you have installed. In Mojave Apple changed the route users. Cancel and restart. If you have stuck downloads in the Mac App Store or updates that won’t start.

What Should do Before Upgrading MacOS?

Mac

Although the every new macOS upgrade comes with certain exciting features, you need to know if your Mac computer can safely be updated (take Big Sur as an example). If you pay no attention to the details, macOS Big Sur update problems come with you for sure, probably your Mac update stuck or Mac failed update won't boot. Here are some of the things that you should look for before you upgrade to the new update.

1.Check compatibility. Big Sur requires any of the following Mac models: iMac; MacBook Pro; MacBook Air; MacBook; Mac Pro; Mac Mini
2.Check minimum software and hardware requirements. You should have OS X Mountain Lion 10.8 or later. It requires at least 2GB of memory and 14.3GB of storage space to perform the Big Sur upgrade.
3.Backup your Mac. To avoid any possible macOS Big Sur update problems, making a backup of your Mac comes essential. You can backup Mac with Time Backup Machine, iCloud, iTunes, or any other third-party Mac backup tools like MacX MediaTrans.

Mac Won't Download Update

My wife has an eMAc that has developed a problem. Any time she tries to download a file from the web, absolutely nothing happens. This is true for both Firefox and Safari and applies to any type of file (picture, game etc.) On the other hand, updates from Apple download fine and my laptop downloads fine when plugged into her cable modem. She is running the latest version of OS X and the start of the problem does not seem to coincide with any new software being installed.
Any ideas as to what might be the cause?
Thanks