Hi, on 2019-07-25 systemd-udev-reload.hook was running, let alone that I rebooted, before later that day, I used a shared folder by a Windows 7 guest, without experiencing an issue. I don't notice a related upgrade since then, systemd-udev-reload.hook wasn't running anymore, but I rebooted in the meantime. If I try to use a shared folder today, Windows 7 crashes and the VirtualBox log mentions "Failed to open "/dev/vboxdrvu", errno=13, rc=VERR_VM_DRIVER_NOT_ACCESSIBLE". I tried with two kernels. I don't know if it is related to udev at all. $ pacman -Q virtualbox-bin virtualbox-bin 6.0.10-1 $ ls -hAld /dev/vbox* crw------- 1 root root 10, 56 Jul 27 13:00 /dev/vboxdrv crw------- 1 root root 10, 55 Jul 27 13:00 /dev/vboxdrvu crw------- 1 root root 10, 54 Jul 27 13:00 /dev/vboxnetctl drwxr-x--- 3 root vboxusers 60 Jul 27 13:00 /dev/vboxusb As soon as possible, I need to use the guest with a shared folder again, but I don't have a clue how to fix the issue. Unfortunately https://aur.archlinux.org/packages/virtualbox-bin/ is down due to maintenance. Regards, Ralf