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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.
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If you get the same error, try solution 1.
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