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Navigate to System Preferences > Security & Privacy. You can click ‘Next’ for now.Īfter reaching the end, installation will fail with the message above. You might see a prompt from macOS about not allowing unsecure system extensions. Run the VirtualBox installer just like any other installer. Go to System Preferences > Security & Privacy. This guide has been updated for macOS Mojave as well. The VirtualBox installer fails with “The installation failed” where it “encountered an error that caused the installation to fail.” The installation will now complete successfully.I tried to install VirtualBox on macOS High Sierra, but I got an error about kernel drivers, system extensions, and kernel modules not being installed. Delete all remaining files, reinstall a fresh copy of VirtualBox, and immediately open the Security & Privacy menu to see this option. If this message does not appear, uninstall VirtualBox by opening your “Applications” folder, then dragging the VirtualBox application to the Trash. To note: This option is only available for about 30 minutes after a fresh install of VirtualBox.

Under the “General” tab, there is should be text down that says, “System software from developer ‘Oracle America, Inc.’ The upload has been blocked.” Click the “Allow” button. From there, click on the “Security and Privacy” option. Unfortunately, you have to fetch the prompt.įirst, access System Preferences by clicking the Apple icon in the top menu bar and then selecting the “System Preferences” button. You will need to give the software explicit permission to access the computer.

Whether you’re trying to set up a Windows, Linux, or Mac virtual machine, the error appears because this is the first time your Mac has installed Oracle products (like VirtualBox).