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Problems installing Mojave from app store

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?


Posted on Mar 22, 2020 11:56 AM

Reply
3 replies

Mar 23, 2020 4:42 AM in response to Peterh1967a

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


Mar 23, 2020 12:31 PM in response to orangegrouptech

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

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