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I don't want to download Catalina just yet, and so I want to download Mojave instead (I am currently running High Sierra). I follow the link to the app store from the apple support site and have downloaded the latest version of Mojave.
When I try to install it (from the app store, not utilities) I get the message "This copy of the Install macOS Mojave.app application is damaged, and can‘t be used to install macOS."
Anyone have a solution please?
You could try making a bootable copy of macOS Mojave and boot from it.
https://support.apple.com/en-us/HT201372
try again, when booted from the USB click install/reinstall macOS. If the same thing happens, go to utilities>terminal and set the date to Sep 24 2018 by typing:
date [mm][dd]HH]MM[yy]
where mm is month and MM is minute.
Peterh1967a wrote:
I don't want to download Catalina just yet, and so I want to download Mojave instead (I am currently running High Sierra). I follow the link to the app store from the apple support site and have downloaded the latest version of Mojave.
When I try to install it (from the app store, not utilities) I get the message "This copy of the Install macOS Mojave.app application is damaged, and can‘t be used to install macOS."
Anyone have a solution please?
You do not say what exact Mac /model /year /size /retina /touchbar is this
or
what exact macOS you are currently running?
Typically a slow internet download speed is what corrupts a download.
Delete the corrupt /damaged .app that you downloaded and empty the trash.
Try again from a different Network, or try using Ethernet connection if your WiFi is suspect.
macOS 10.14 Mojave - Technical Specifications:
https://support.apple.com/kb/SP777
Upgrade to macOS Mojave - Official Apple Support download:
https://itunes.apple.com/us/app/macos-mojave/id1398502828?mt=12
Thanks for the replies guys,
i had realised that the installation file wasn't actually damaged, but rather that there was a problem with the associated certificate.
Thanks very much @orangegrouptech ..... making a bootable copy on USB, changing the date on terminal, and then installing from there solved the problem.
Thanks a bunch.
Peter
Problems installing Mojave from app store
