I had configured a virtual ctrlX CORE some time ago and it was starting fine, but just the other day I did notice that I have the same message mentioned in the headline of this post. The control takes very long time to start or it didn't start at all. I did not change anything on the settings in between. It could be, that some Windows or BIOS updates have been installed on my computer.
In the end I could fix the problem by
deactivating the Hypervisor Plattform, boot my Laptop,
activate it again and boot the laptop one more time.
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