Issue with second Host-Only adaptors

[MrRalphMan]

I first noticed this as I've been trying to use Genymotion to emulate a Mobile for testing a mobile app.
When it attempts to lauch this, I get the following error:

Failed to open a session for the virtual machine CentOS 7 Desktop.
Failed to open/create the internal network 'HostInterfaceNetworking-VirtualBox Host-Only Ethernet Adapter #2' (VERR_INTNET_FLT_IF_NOT_FOUND).
Failed to attach the network LUN (VERR_INTNET_FLT_IF_NOT_FOUND).
Result Code: E_FAIL (0x80004005)
Component: ConsoleWrap
Interface: IConsole {872da645-4a9b-1727-bee2-5585105b9eed}

I've tested with another known good image and switched it to use the 'VirtualBox Host-Only Ethernet Adapter #2' adaptor and this fails with the same error.

I've removed/added this Adaptor in the Host Network Manager and it removes/adds an Ethernet 5 adaptor under Windows.

Not sure why this Adaptor throws this failure, if I switch the Image to the first Host Only adaptor, then it boots.
If I add another Adaptor #3 it also works. But this created two 'VirtualBox Host-Only Ethernet Adapter #2' adaptors under Windows.

Unfortunately for some reason Genymotion forces their image to use this #2 adaptor, even if I change it manually.

What can I do to get this Adaptor up and running again?

Paul

[scottgus1]

Right-click the adapter in the window in the screenshot. Check if the "Virtualbox NDIS6 Bridged Networking Driver" binding is checked on the adapter:



If it is not, uninstall Virtualbox, reboot the host, then reinstall Virtualbox using right-click Run As Administrator, making sure that the Bridged option is enabled.