Cum dezactivezi Gatekeeper pe macOS? App cannot be opened because it is from an unidentified developer.

So you can install some applications on Mac, you need to know how to disable Gatekeeper pe macOS. Otherwise, when you want to install some applications, you will defend your message “App cannot be opened because it is from an unidentified developer.“

Before you see how you can disable gatekeeper on macos, it is very important to know what this feature means and what it helps.

What is it Gatekeeper pe macOS?

Gatekeeper It's O security function integrated into the operating system macOS, starting with the version OS X Mountain Lion (10.8), which helps protect the users against malware applications and other badly intentional programs. Basically, this function controls what applications are allowed to be installed and open on a Mac.

The mod implies Gatekeeper is configured to allow installation and opening only the applications discharged from App Store or those of identified developers and check for Apple.

If you are trying to meet an application from an Apple not identified developer, running the application will be stopped with the message “App cannot be opened because it is from an unidentified developer.”

Gatekeeper It does not protect you from 100%malware applications, but it helps users who are not very technical and who can download applications from the Internet that could be dangerous to the operating system. Gatekeeper Previate to accidentally install applications that could affect security Mac.

How do you disable gatekeeper on macos?

Most mute times I do not recommend to disable security characteristics of the operating system, but there are situations where if you need to install an application from outside the App Store, or which is created by an unverified developer of Apple, deactivating Gatekeeper is required.

In our example, we will take the application called “App.dmg” that is created by a “unidentified developer” and which Gatekeeper It blocks it.

When we try to open the file for installing the application “App.dmg” We receive the message: “App.dmg” cannot be opened because it is from an unidentified developer. With the completion CA macOS It cannot check if this application contains malware.

If this message appears when you try to install an application, you have two methods at hand.

Method 1: Opens the blocked application of Gatekeeper

You can open the blocked application, from: System Settings → Privacy & Security.

Sub “Security” You will find the option by which you can open the application blocked by Gatekeeper. “Open Anyway“.

“By opening this app, you will be overriding system security which can expose your computer and personal information to malware that may harm your Mac or compromise your privacy.” – Click “Open“.

application “App.dmg” It will open, but if it has several installation processes, it may still be blocked by Gatekeeper.

Method 2: disable Gatekeeper and allows installation from multiple sources

The safest way to install applications from any source, not only from the App Store and from the verified developers, is to turn off Gatekeeper. This way you will be able to choose yourself if you want to allow the installation of applications on macOS, and from other sources. “Anywhere“.

Open Terminal pe macOS and execute the order line (enter the user password for the line to be executed):

sudo spctl --master-disable

You come back in “Privacy & Security” and you activate the new option “Anywhere“.

Now you can install any application on macOS, even if it is not from the App Store or from a developer identified and checked by Apple.

You can activate the Gatekeeper protection through the command line again:

sudo spctl --master-enable

There are scenarios in which applications still cannot be installed. “App is damaged and can’t be opened“.

In this scenario, you must be very careful that the installation of that application will not compromise the integrity of the operating system. If you want to install an application when the error message appears: “App is damaged and can’t be opened“, you can eliminate the extended attributes of the respective application. Including those attributes that can block the application for security reasons.

Execute in the terminal, the following order line:

xattr -cr /full/path/Application.app

Of course, change Path and the application name in the order above. (Type: pull with drag&drop the application in Terminal, after writing the order line).