[Solved] VERR_SSM_UNSUPPORTED_DATA_UNIT_VERSION on all my VMs after Win 10 v1709 upgrade

[Aura]

Hi,

Out of no where (probably after upgrading my Windows 10 x64 Pro to Windows 10 v1709, none of my VMs will open. They all crash with this error:

Code: Select all

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 {872da645-4a9b-1727-bee2-5585105b9eed}

Is there any way to fix it? I really don't want to have to re-create them all as I had to do twice before when I got the same kind of error.

Host OS: Win 10 v1709 (16299.19) x64
VBox version: 5.2.0 r118431

[mpack]

Discard any saved state associated with the VM.

[Aura]

I restored the VM to the latest snapshot I have of it, but I'm still getting the error message.

Note that I have the same issue on my work laptop as well (which was upgraded to Windows 10 x64 v1703).

[mpack]

I said "saved state", not snapshot. Shut down the VM entirely, right click the VM in the UI, select "Discard saved state".

[Aura]

Ah my bad, I understand now. I had never done/heard of that feature before. It works now, thank you!

Case closed.

[mpack]

Well, you must have heard about the feature: every time you close a VM you must be habitually clicking the close button and then "Save state" instead of doing a start menu shutdown (or whatever the guest OS does). That's fine, but "Save state" does what it says, i.e. dumps memory into a file for quick restore later - which may not work if a major component of the system changes and affects what should be in the memory dump.

Marking as solved.