Gangmax Blog

VirtualBox Error 'NS_ERROR_FAILURE (0x80004005)'

Yesterday I got the “NS_ERROR_FAILURE (0x80004005)” error when starting a VM instance in VirtualBox. Reinstalling didn’t work and the error was still there. The real problem is the security permission. Go to “System Preferences -> Security & Privacy”, confirm the permission needed by VirtualBox, then the problem is solved.