I have a similar problem like mentioned in this question:
Unable to create the virtual machine
But, my problem is a bit different in the error description:>
For what it's worth, my problems have seem to go away after I turned off "Deterministic Network Enhancer" on all the vEthernet adapters like this:
I got inspired to try this following the documentation online from Microsoft here. See the section titled "To reconfigure the Hyper-V virtual adapter used by the emulator".
Hope this one sticks. This has been a tiring process trying to keep up with what works and not with this "new and enhanced" emulator.