Warning: we have not re-enabled app installation security yet. It should just work or you should see the Allow button appear. The Allow button has not appeared yet: don’t worry.The Allow button has already appeared: just click Allow and install VirtualBox.Great! Now one of either two things should happen: Hold down the Option key ⌥ and right-click System Preferences in the Dockīelow Allow apps downloaded from: you should now see a third option which is already selected: Anywhere.Don’t worry if it looks like your password isn’t being typed: Mac hides the input for securityĭone! Next we need to restart System Preferences: Now type in the password for your Mac account.Type the following into Terminal: sudo spctl -master-disable Now let’s temporarily disable Mac Gatekeeper.Type in Terminal and press ENTER to open up Terminal.To force macOS to let us install VirtualBox, we’ll need to use Terminal to open up our security preferences temporarily: Do not click install (yet)ĭone! If the message and the Allow button still didn’t appear, we’ll have to resort to drastic measures with solution #3: Solution #3 - Force macOS to let us install VirtualBox Go through the installer until you get to the screen with the Change Install Location… and Install buttons.Sometimes macOS needs a good restart before deciding to show the Allow button.

If only it were always this simple… If the Allow button didn’t come up for you, try out the next one. If you do see the message, click the lock icon in the bottom left of the windowĭone! Now open up the VirtualBox installer again and it should work fine.Hopefully you’ll see a message saying System software from developer “Oracle America, Inc.” was blocked from loading.If you’re lucky, this solution will work first time. If you get the same error, try solution 1. Click App store and identified developers.Click the lock icon in the bottom left of the window.Make sure ‘App store and identified developers’ is checked

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