physical network interfaces were not found VirtualBox Host-Only Ethernet Adapter 2 adapter 2 You can either change the machine s network settings or stop the machine

Question

Hi I am unable to login to Oracle VM. Although I have enable an option in my BIOS named Intel virtualization or Intel vt-x. 

Comments

Have a look at this thread: https://www.edureka.co/community/33201/error-when-trying-to-start-host-on-oracle-virtual-box

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This answer also mentions that you need to enable virtualization which I guess you've already done. Try adding a host network to the machine. That solved the error in my case.