VirtualBox error on MacOS Sierra

Upgrading Vagrant and VirtualBox fixed the issue for me. For those wondering, no you don't end up losing your existing VMs if you upgrade.

  • Vagrant: https://www.vagrantup.com/downloads.html
  • VirtualBox: https://www.virtualbox.org/wiki/Downloads

some reported issues after update to macos Sierra. re-installing Virtualbox solves the issue


This issue affects anyone installing VirtualBox for the first time on a fresh macOS High Sierra 10.13.

This effectively breaks our fully automated installation process on macOS, since the user now has to perform a manual approval and then restart the installation (reboot and rerun the installation in some cases)

First, try to restart the Virtualbox with below command.

sudo "/Library/Application Support/VirtualBox/LaunchDaemons/VirtualBoxStartup.sh" restart

If you are still facing this issue then given assign the below permission as per the screenshot. enter image description here

Note: If the Allow button does not show up, run sudo kextcache -system-caches

Source: https://github.com/docksal/docksal/issues/417