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A kernel extension (or kext for short) is a plugin to the kernel that is in the form of a bundle (similar to apps). An example of a use if kexts would be to map the built-in keyboard for a Macbook Pro

114 votes
6 answers
126k views

VirtualBox 5.1.28 fails to install on MacOS 10.13 due to KEXT security

I have tried to install VirtualBox 5.1.28 to macOS high sierra but it fails every time with the following screen: After some looking around I found this thread and I did indeed see that it was block …
BradErzwh's user avatar
  • 2,661
142 votes
Accepted

VirtualBox 5.1.28 fails to install on MacOS 10.13 due to KEXT security

Managed to solve it. Eject the VirtualBox image from: Finder > Devices Now allow the exception in: System Preferences > Security & Privacy Finally but not least click Allow button so that way th …
BradErzwh's user avatar
  • 2,661