After several attempts I now uninstalled VirtualBox as well as my virus scanner, then rebooted and re-installed VirtualBox for Windows.
Next, I followed the instructions from topic 82277 to edit HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\VBoxDrv in the registry from 1 to 3 before rebooting. Then I rebooted.
in sum:
- Uninstall everything and then reboot.
Uninstall Virus scanner and then reboot.
Reinstall VirtualBox. DON’T REBOOT
Change registry key to 3 for HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\VBoxDrv
Reboot
Run sc.exe start vboxdrv in Windows Command Prompt.
Run VirtualBox
I've run out of ideas what to do. Any ideas are highly appreciated!
Log details:
[ModEdit; removed partial VBoxHardening.log]