id summary reporter owner description type status component version resolution keywords cc guest host 17029 Multiple Instances of VBoxXPCOMIPCD, VBoxSVC, VBoxHeadless mh367 "Hello! After upgrading from debian 8/jessie running virtualbox 5.1.24 to debian 9/stretch and virtualbox 5.1.26, multiple processes (at least two) for a single virtual machine may be started (with two seperate VBoxSVC-processes as their parents). The commands ""vboxmanage showvminfo"" and also ""vboxmanage list runningvms"" sometimes report a wrong - ""powered off"" or ""aborted"" - state for running and fully functional machines. Several Win10 and Win8 guests are not able to start anymore due to severe filesystem damages. The relevant part of ""ps aufx"" looks something like this: {{{ ... vbox 1788 Sl /usr/lib/virtualbox/vboxwebsrv --background -F /var/log/vboxweb.log -R 10 -S 1048576 -I 86400 vbox 1800 S /usr/lib/virtualbox/VBoxXPCOMIPCD vbox 1809 Sl /usr/lib/virtualbox/VBoxSVC --auto-shutdown vbox 3834 Sl \_ /usr/lib/virtualbox/VBoxHeadless --comment VM221 --startvm 5e5c64e7-... vbox 4093 Sl \_ /usr/lib/virtualbox/VBoxHeadless --comment VM320 --startvm cfe3de02-... vbox 4186 Sl \_ /usr/lib/virtualbox/VBoxHeadless --comment VM050 --startvm 43d2653e-... vbox 4187 Sl \_ /usr/lib/virtualbox/VBoxHeadless --comment VM222 --startvm 6206dddc-... vbox 4441 Sl \_ /usr/lib/virtualbox/VBoxHeadless --comment VM223 --startvm 056443b9-... vbox 4936 Sl \_ /usr/lib/virtualbox/VBoxHeadless --comment VM057 --startvm 0bd9f77d-... vbox 18145 Sl \_ /usr/lib/virtualbox/VBoxHeadless --comment VM322 --startvm 0429d803-... vbox 2083 Sl \_ /usr/lib/virtualbox/VBoxHeadless --comment VM321 --startvm 5b36d602-... ... vbox 2169 S /usr/lib/virtualbox/VBoxXPCOMIPCD vbox 2174 Sl /usr/lib/virtualbox/VBoxSVC --auto-shutdown vbox 2218 Sl \_ /usr/lib/virtualbox/VBoxHeadless --comment VM322 --startvm 0429d803-... ... }}} in this excerpt ""VM322"" is running as PID 18145 and 2218. The host system is a DELL PowerEdge T620 server powered by two Intel(R) Xeon(R) CPU E5-2620 0 @ 2.00GHz running Debian 4.9.30-2+deb9u3 (2017-08-06) x86_64 GNU/Linux. Guests are about 36 machines running MS Windows (Win2000 - Win10). A downgrade to the virtualbox 5.1.24 deb-package installed in debian ""stretch"" did not solve the problem. Thanks a lot for any advice!" defect new other VirtualBox 5.1.26 Multiple Instances Windows Linux