Hello. I am trying to install OS X 10.13.6 from 10.12.6 on a Mac mini. I have located the link in App Store but when try and install I am getting a message saying "This copy of the Install macOS High Sierra application is damaged, and can‘t be used to install macOS." Any help with this would be greatly appreciated.
Mac mini, macOS 10.12
Link to High Sierra installation files - https://support.apple.com/downloads/highsierra
Have you tried deleting the installation file in the applications directory before rebooting into safe mode and then downloading the installer again?
Look in Applications for Install macOS High Sierra.
Great news! :)
Thanks for your response! I am not sure where to delete the installation file it may have tried to download. I don't see it has downloaded anything apart from the error message. I rebooted into safe mode and tried to install but the same message came up again. Any and or all help greatly appreciated.
Seeing much of that, delete that one & try it in Safe Mode...
Safe Boot from the HD, (holding Shift key down at startup), does the problem occur in Safe Mode?
Thank you so much for your response. That did the trick. Deleting the file and rebooting into safe mode and trying to install again worked. Many thanks.
I have the same problem, and have the installer copied directly into ~/Applications, and have tried to boot into Safe Mode. Still doesn't work for me!
Any idea where to download High Sierra from Apple.com?
I think EndersX has your solution.
High Sierra installation file corrupted?
