
Still I’m adding this solution here, just to check the settings before moving to the next solution.

As we are discussing the errors obtained after updating macOS, this solution may be irrelevant. Usually this solution is needed when you get errors after installing VirtualBox. Solution 4: (Allow identified developer in Security & Privacy) If you are still getting the NS_ERROR_FAILURE (0x80004005) error, then try the below solution.

Launch terminal and run the command csrutil status and make sure SIS is enabled.Allow the mack to launch in normal mode.
