Hi Thanks, the output of the commands is: ohannesOffice:/home/johannes # ls -ld /tmp/.vbox-j* drwx------ 1 johannes users 16 2020-07-28 20:49 /tmp/.vbox-johannes-ipc JohannesOffice:/home/johannes # ls -l /tmp/.vbox-j* insgesamt 4 srwx------ 1 johannes users 0 2020-07-28 20:49 ipcd -rw------- 1 johannes users 6 2020-07-28 20:49 lock As far as I can see, what is expected... Thanks a lot