Unable to launch VirtualBox after upgraded to Windows 10

After upgraded to Windows 10, having issue to launch VirtualBox in all ways, neither in normal, headless, detachable.



Failed to open a session for the virtual machine MicrosoftWindows7_HomePremium_X64.

The virtual machine 'MicrosoftWindows7_HomePremium_X64' has terminated unexpectedly during startup with exit code 1 (0x1).  More details may be available in 'C:\Users\xxxx\VirtualBox VMs\YourVM\Logs\VBoxHardening.log'.

Result Code: E_FAIL (0x80004005)
Component: MachineWrap
Interface: IMachine {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}




Fixed after upgrade to VirtualBox-5.2.4-119785-Win.exe


But hit another issue:

Failed to open a session for the virtual machine MicrosoftWindows7_HomePremium_X64.
Unsupported version 6 of data unit 'hda' (instance #0, pass 0xffffffff) (VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION).

Result Code:	E_FAIL (0x80004005)
Component:	ConsoleWrap
Interface:	IConsole {xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx}

Found solutions at:
https://forums.virtualbox.org/viewtopic.php?f=6&t=85448

Re: VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION on all my VMs after Win 10 v1709 upgrade

by mpack » 12. Nov 2017, 10:49

Discard any saved state associated with the VM.