I have a Macbook Pro 13 inch with OS X Yosemite [Memory 8 GB, Graphics Intel Iris Graphics 6100 1536 MB]. I am trying to setup Genymotion as Android Emulator. I installed Oracle
I tried all these and nothing working with me except this one
VirtualBox from the unidentified developer so OSX refuse to install it so you need unlock this option from Security and privacy --> general tab
reference
https://medium.com/@DMeechan/fixing-the-installation-failed-virtualbox-error-on-mac-high-sierra-7c421362b5b5