How To Delete Installers On Mac

Fix copy of Install MacOS damaged and cant be used to install macOS

If you lot take attempted to utilise a MacOS installer application recently, you may discover an error bulletin stating something like "This copy of the Install macOS Mojave.app awarding is damaged, and can't exist used to install macOS." This prevents the installer of macOS from working and running, and essentially makes the installer applications useless.

The cause of this error is an expired certificate, and because the certificate is expired the "Install macOS" app for Mojave, Sierra, and Loftier Sierra will not run. Fortunately, there is a fairly simple solution to the "damaged" installer problem.

Resolving "Install MacOS Application is Damaged, Can't be Used to Install MacOS" Fault Messages with Mac OS Organization Installers

The easiest way to resolve the "This re-create of the Install macOS .app application is damaged, and can't exist used to install macOS." is to re-download the installer again from Apple, which contains a new fresh document that is non expired. The links below point to Apple resources where y'all can discover or download the updated macOS installers for Mojave, High Sierra, and Sierra:

Notice macOS Mojave from Apple tree here – (direct App Store link)
Find macOS Loftier Sierra from Apple here – (App Store link)
Find macOS Sierra from Apple hither – (direct download link)

You may need to reboot the Mac later on you take downloaded the new (and valid certificate) installer awarding, particularly if you had already launched a version that showed the application damaged fault message.

If you do not download new versions of these macOS installer applications, you are probable to encounter the error letters for each release if you effort to open or use the MacOS installer, or even a USB kicking drive created with i of the expired installers:

"This re-create of the Install macOS Mojave.app application is damaged, and can't be used to install macOS."

Copy of Install MacOS Mojave application is damaged and cant be used to install macOS

"This copy of the Install macOS High Sierra.app application is damaged, and can't be used to install macOS."

"This re-create of the Install macOS Sierra.app application is damaged, and tin can't be used to install macOS."

If yous desire to see specifics and the expired certificate itself, you can investigate .pkg components of the MacOS Installer with tools like Suspicious Package and pkgutil, which can show the expired document that causes the mistake message:

Certificate expired for MacOS Mojave Installer application

Method 2: Modifying the Application Installer to Ready "Install MacOS Application is Damaged" Errors

This other arroyo to resolving the "Install MacOS Application is Damaged, Can't exist Used to Install MacOS" error message was left past reader Howard in the comments, and some users have had success with this as well:

You can also fix the This re-create of the Install macOS Mojave.app awarding is damaged, and can't be used to install macOS. message like this:

Step 1. Go to your Applications folder.

Pace two. Find the Installer for macOS Mojave in Applications binder

Step 3. Right click on the installer and click "Show Parcel Contents".

Pace 4. Click on folder named "Contents".

Stride 5. Click on the binder named "SharedSupport".

Footstep 6. Delete the file named "InstallInfo.plist".

Footstep seven. Enter your administer countersign to confirm.

Stride 8. Now open the installer for MacOS Mojave over again, it will run

If that fails, delete the installer and re-dowload it from Apple

Permit us know if that approach worked for yous in the comments, or if you simply re-downloaded the installer from the Mac App Shop.

Similar issues accept happened with various Mac Os installers in the past. Bated from re-downloading the installer, another option that some users take reported to piece of work that gets around these sort of error messages for installers (and sometimes apps too) is setting the Macs clock back in time (in this case, before October 2022 when the document expired rendering the installer application unusable), but that apparently doesn't work all the fourth dimension with the Install MacOS Mojave app. It'south also non always a applied solution to adjust clocks particularly if you plan on widely deploying, using, and archiving the installer apps for various MacOS releases and on unlike hardware. Instead, but re-download the new versions of "Install macOS.app" that you require, and continue those around instead.

Many Mac users like to maintain a repository of MacOS installer packages for older versions of organization software. For example, I have a collection of MacOS installers including for Mac Os 10 Snow Leopard, Mac OS Ten Mavericks, MacOS Loftier Sierra, macOS Sierra, macOS Mojave, and MacOS Catalina. These tin exist used to build USB kicking installers, restore systems, troubleshoot, perform clean installations of the various system software versions, perform upgrades to specific system software releases, and serve many other purposes. If y'all accept a similar installer archive, it'due south probably a good time to supplant those installers with the new versions that won't be expired.

Take you lot run into the "application is damaged, and can't be used to install macOS" error message, and did you fix it by downloading a new macOS installer package? Did you detect another solution? Allow us know your experience with this issue in the comments below.