VirtualBox start error on macOS 10.12.4
macos-sierra, virtualbox
Solution
resolved by uninstall it first and install again. NOT install it by overwite.
Problem
Failed to acquire the VirtualBox COM object. The application will now terminate. Callee RC: NS_ERROR_ABORT (0x80004004) I tried from 5.1.10 to 5.1.22, but got the same error above.