Cant import any appliances after win7 restarted following Updates

[corcky]

Here is the error log

Failed to import appliance D:\VirtualBox VMs\Clone xp111.ova.

Medium 'C:\Users\Paul.APPLICATIONCENT.000\VirtualBox VMs\Clone xp111_\Clone xp111-disk001.vmdk' cannot be closed because it is still attached to 1 virtual machines.

Result Code: VBOX_E_OBJECT_IN_USE (0x80BB000C)
Component: MediumWrap
Interface: IMedium {4afe423b-43e0-e9d0-82e8-ceb307940dda}

The VM (xp 32 bit) was running. I had just set up a Win 7 Pro 64 bit host and had not disabled the auto reboot following a windows update.
I have tried importing several different XP vms using VirtualBox 5.1.26 and the above error appears each time.

I removed VB using 'Programs and Features' in control panel - re-installed vb. However the same error occurs.

Can anyone help?

[corcky]

A possible reason for this is that the cloned vm objected to being run on a different host than it was created on.