This doesn't work for me. I had OracleVB installed with 6 clients setup and working.
I then added Hyper-V via Control Panel, Programs and Features, Add features. Setup Windows 10 Tech Preview as a VM and it works fine, but now none of the OracleVB clients (VMs) will work. I get this error:

Click image for larger version

Anyone have this working?

What about Hyper-V and VMWare?