I can't get my Mac to update to MacOS 10.13

macOS High Sierra - Technical Specifications

General Requirements

• OS X 10.8 or later
• 2GB of memory
• 14.3GB of available storage to perform upgrade*
• Some features require an Apple ID; terms apply.
• Some features require a compatible Internet service provider; fees may apply.

Mac Hardware Requirements

For details about your Mac model, click the Apple icon at the top left of your screen, choose About This Mac. These Mac models are compatible with macOS High Sierra:

• MacBook (Late 2009 or newer)
• MacBook Pro (Mid 2010 or newer)
• MacBook Air (Late 2010 or newer)
• Mac mini (Mid 2010 or newer)
• iMac (Late 2009 or newer)
• Mac Pro (Mid 2010 or newer)

https://itunes.apple.com/app/macos-high-sierra/id1246284741?mt=12

The model and year of your Mac will determine which macOS you can upgrade to,

read Section 1 in each of the How To's.... below.

Please use Safari to access the following links do not use Firefox

How to upgrade to macOS High Sierra - Apple Support

Before upgrading make a full back up of your Mac.

Check that third party apps you use have updates available for the new OS.

https://roaringapps.com

Check that your printers/ scanners etc have updated drivers and software available for the new OS.

Connect your mac to your router via cable rather than rely on WiFi.

Do not use your mac while it is downloading

and do not use any other devices that share the same internet connection.

If the App Store says ‘Open’ then it is detecting a previous download of the install app

go to the Applications folder locate Install macOS High Sierra.app.

Move it to the Trash, empty the Trash.

Restart, click on the link again, the App Store should say ‘Get' or 'Download'.

We know that macOS 10.13 is High Sierra, Haileystarr99.

You were saying that you «can't get [your] Mac to update to MacOS 10.13».

I asked you what precise model of Mac you are trying to «update to MacOS 10.13».

BDAqua posted specifications for installing High Sierra (macOS 10.13), which included a list of compatible Macs.

Please help us help you.

What precise model Mac do you have, Haileystarr99?

See About This Mac, under the Apple menu.

Different models are limited to different versions of MacOS.