virtualbox.org

When i first installed vitrualbox and installed ubuntu in my windows 10,it works great.But next day when i tried to oped it i get "Error relaunching virtualBox vM process: 5Command line:
'60eaff78-4bdd-042d-2e72-669728efd737-suplib-3rdchild --comment ubuntu --startvm33334b6e-8406-401f-b3ab-0e58f2493dcd --no-startvm-errormsgbox --sup-hardening-log=D:
VirtualBoxVMs\ubuntu\Logs\VBoxHardening.log'(rc=-104)
Please try reinstalling VirtualBox.
where: supR3HardenedWinReSpawn what: 5
VERR_INVALID_NAME(-104) - lnvalid (malformed) file/path name."
i reinstalled the VB , uninstalled the Mcafee,and even closed the windows defender,but iy still cant work.
please someone helps!!
here is the VBoxHardening.log

I am sorry for my bad English...
And my VB is 6.1.16. I tried several versions of VB and it didn't work.

The VirtualBox hardening code is prevented from relaunching the VirtualBoxVM process, but cannot identify the cause. This is often the result of security software installed in the Windows host OS. A well-known example is IBM Trusteer Rapport.