id summary reporter owner description type status component version resolution keywords cc guest host 18793 Guest Additions doesn't start on macOS = fixed in SVN/6.0.12 Codeguard paulson "Due to an error in VBoxClient.cpp, it will try to use '' as default log filename. As far as I understand it, the full path is '/', and macOS returns EACCES for that. See https://www.virtualbox.org/svn/vbox/trunk/src/VBox/Additions/darwin/VBoxClient/VBoxClient.cpp In main(): static char *szLogFileName = NULL; In vbclInitLogger(): Calls RTLogCreateEx with ""%s"", pszLogFileName I think that the problem was introduced in https://www.virtualbox.org/changeset/69752/vbox" defect closed guest additions VirtualBox 6.0.10 fixed OSX Server Mac OS X