10.13.6 upgrade to Mojave

Look in your Applications folder for Install macOS Mojave.app, move it to the Trash, empty the Trash.

Restart your mac, go back to the App Store Mojave page.

How to upgrade to macOS Mojave - Apple Support

Make sure it says 'Get'.

Begin the download, do not use the mac while it is downloading, do not use any other

devices that share the same internet connection.

Also do not use Wi Fi, use a cabled connection to your router.

Few things to check:

• Do you have any outstanding updates for macOS 10.13? Especially security updates. If so apply them.
• Did you get the Mojave installer from the link in this page: How to upgrade to macOS Mojave - Apple Support ?

Before downloading the installer again, delete the previous one. Look in the Applications folder.

Alternatively, you can try to do the update in Safe Mode: How to use safe mode on your Mac - Apple Support.

Hope that helps,

WD

Delete the installer in Applications (this download does not work when your mac can have Catalina).

Restart the mac.

Then you should download from another Apple link:

Get macOS Mojave

Great!

Have a good day,

WD