Some software that you will want to install on your Mac may not be approved by Apple. The operating system versions mark most programs as "from an unidentified developer" and then you have to follow a few steps in order to install them. You can carry out the procedure for each new installation or directly deactivate this security parameter.
Steps
Method 1 of 2: Authorize an installation
Step 1. Download the software you want to install
If your computer asks if you really want to download, confirm your choice. However, you must be sure of the source of the program before performing this step.
Step 2. Open the program file
When you click on the installation file, a window will open with the following error message: "This app is from an unidentified developer".
Step 3. Click OK
This action will close the window.
Step 4. Open the menu
Click on the Apple icon at the top left of your screen. A drop-down menu will then appear.
Step 5. Go to System Preferences
This line is near the top of the menu.
Step 6. Click Security & Privacy
This category is on the first line of the preferences menu.
Step 7. Click on the padlock symbol
It is located at the bottom left of the window.
Step 8. Enter your password
You must then click Unlock in order to be able to change your system preferences.
Step 9. Click Open Anyway
This option is next to your file name.
Step 10. Click Open
You can then complete the installation.
Method 2 of 2: Allow all installations
Step 1. Open Spotlight
Click on the magnifying glass symbol at the top right of your screen. In order to allow all installations, you must first change a default setting in your operating system.
Step 2. Type terminal
Then click on
Terminal. This line should appear directly below the Spotlight search bar.
Step 3. Type
sudo spctl --master-disable
.
In Terminal, enter this command and press Enter. It restores the installation options.
Step 4. Enter your password
This is the password that allows you to log on to your computer. This step will restore the option you need to change in the Security & Privacy menu.
Step 5. Open the Apple menu
Click on the Apple logo at the top left of the screen. A drop-down menu will then appear.
Step 6. Click System Preferences
This line is near the top of the menu.
Step 7. Go to Security and Privacy
This category is on the first line.
Step 8. Click on the padlock icon
It is located at the bottom left of the window.
Step 9. Enter your password
Then click on Unlock. You should now be allowed to change the settings.
Step 10. Now check the Anywhere box
It is located below the “Allow downloaded applications from” line near the bottom of the window.
Step 11. Click Allow From Anywhere
This choice will allow you to directly install software from unidentified developers, without having to authorize them individually.
- If you don't install unauthorized apps for 30 days, you will have to redo this entire process.
- Click the padlock icon if you want to lock out changes to settings.
Step 12. There you go, it's over
You should now be able to install the program as you normally would.
Advice
- Some applications are authorized by Apple, but their number is limited.
- If you can't open a download, open Downloads in your Finder. Then right click on the software and click on To open. Then type your password.