How To Fix Damaged App Message On Macos Catalina

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Apple has tightened up the Gatekeeper security in its latest operating system and one very visible change is that the option to allow apps from unidentified developers is no longer there.

How to fix damaged app message on macOS Sierra or later

Allow Single App To ByPass The GateKeeper. Or Below check photo. How To Open damaged software Mac without disable Gatekeeper: A short tutorial on how open damaged files and application on Mac without disable GateKeeper. Some users, after this tutorial, cannot open the software on the latest version of macOS High Sierra or latest. MacOS Catalina was released in October 2019 as the sixteenth upgrade to Apple's operating system, which brought new features such as Activation Lock or Voice Control for applications. Following the release, multiple patches followed to fix the existing bugs and improve the performance of the operating system on every Mac device.

To resolve Gatekeeper issues on macOS Sierra and unlock images and programs ( annoying image/application is damaged messages pretending you cannot open things ).

For that reason you might have to completely disable Gatekeeper checks, and to do that open your terminal and type:

sudo spctl –master-disable

How

**Enter your password and you’re done. Note that there are two (2) dashes before master. You might miss that while copy/pasting. So I will leave a screenshot below. I would suggest you type the command manually.

To verify that your operation was successful you need to Open Settings and verify that the Anywhere option is now visible as shown below.

Revert the Gatekeeper Settings

To enable Gatekeeper again, enter the following command (notice two dashes before ‘master’).

sudo spctl –master-enable

OR

Use GateKeeper Helper setting

How To Fix Damaged App Message On Macos Catalina Dmg

We recommend to use our Helper to do that for you, the helper offer the following options:

  1. Disable Your GateKeeper.
  2. Enable Your GateKeeper.
  3. Allow Single App To ByPass The GateKeeper.

Download GateKeeper Helper from here:Click this link

How To Fix Damaged App Message On Macos Catalina 10.15

All Done! I think your problem solve now!