It is the first thing you need to fix the issue as stated above. For that, you need to run the virtual machine showing the error and go to the Devices > Install Guest ...

Workstations manufactured in the 1990s and early 2000s, before Wi-Fi became prevalent, often lack wireless networking cards or adapters that enable a computer to detect and interpret Wi-Fi signals.

How to set bridged networking in a VirtualBox virtual machine Your email has been sent Have you deployed VirtualBox virtual machines, only to find they cannot be reached on your company network? Jack ...