Longtime macOS users will know that even though the Mac has a built-in recovery partition, it's always useful to have a dedicated USB drive with a macOS installer. I am a big fan of using a tool like DiskMaker X to create them to keep around if I need to wipe a drive and reinstall macOS quickly. If you have a drive created for Mojave, Sierra, and High Sierra, know that a certificate has expired. If you are getting an error similar to 'This copy of the Install macOS Mojave.app application is damaged, and can't be used to install macOS', read on to learn how to fix it.
If you're getting the above error message when you go to install macOS, you'll likely experience some panic about what to do. Thankfully, it's an easy fix. As first reported by OSXDaily.com, a fix is quite simple.
Mac Os High Sierra Won't Download
The cause of this error is an expired certificate, and because the certificate is expired, the 'Install macOS' app for Mojave, Sierra, and High Sierra will not run. Fortunately, there is a fairly simple solution to the 'damaged' installer problem.
Fixes to a Stuck Mac OS Sierra Installation Once you have checked everything and you are positive that your Mac has completely stalled, follow these steps: Restart your Mac. Press and hold the Power button to switch off your Mac. Wait for a few seconds and restart your Mac. Visit the Mac App Store. Mac OS X is not supported with binary translation. To run Mac OS X you need a host on which VMware Workstation supports Intel VT-x or AMD-V. Anagh September 25, 2018 at 10:49 AM Reply. I did that before and what happened to you happened to me. Steve January 6, 2018 at 7:09 AM Reply. I hate to say it but this is NOT how to INSTALL OSX in vmware.
Below are the download links for the recent versions of macOS.
You may need to reboot the Mac after you have downloaded the new (and valid certificate) installer application, particularly if you had already launched a version that showed the application damaged error message.
If you are new to making macOS boot drives, we've got articles to help.
Another benefit to making a new boot drive is that you'll get all of the various macOS updates that have been released since you made your last one. It'll make your installation process a lot faster if you are recovering from a dead hard drive, since you won't need to install macOS and then apply patches right afterward. While the process of repairing the 'This copy of the Install macOS Mojave.app application is damaged, and can't be used to install macOS' isn't fun, thankfully, it's easy.
Macos High Sierra Won't Download
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