I am guilty of running Windows 10 with the Insider Preview “Fast Ring” in production as my day-to-day laptop. I also maintain a lab of Hyper-V Virtual Machines (VMs) on my laptop that use shared virtual networking with the built-in interfaces, so I can have the equivalent of a NAT environment for my VMs.
Mind you, it’s really been great in almost every way — except that every time I get an update to the Windows 10 Insider Preview (and that is ever few days lately), I have to re-configure my interface sharing and NAT so my VMs can reach the Internet. So, I thought I’d whip up the steps for you, in case you face the same thing.
So first, after you notice that your VMs don’t have Internet access — and then you remember that you got another Fast Ring update recently, you do this:
Open the Hyper-V Manager on the Windows 10 laptop, and click on “Virtual Switch Manager…” from the Actions area.
Select the virtual switch to be fixed, in my case named “Internal-NAT switch”, and change from Internal to Private, and apply.
You may notice that the Hyper-V interface disappears from the laptop Interface list. Select Internal again to change from Private, and click OK. The Hyper-V interface reappears in the interface list.
Right-click on the WiFi interface (or whichever you wish to share networking with the VMs), and choose Properties. On the Sharing tab, ensure the box is checked for “Allow other network users…” and click the drop-down list under “Home networking connection:”. Change from “Select a private network connection to choose the Hyper-V interface, and click OK.
Note that the previous step has not *always* worked for me, though it usually does. A couple times, I’ve had to either a.) un-check the check box and save before re-enabling sharing, or in rare cases, b.) go into Device Manger and remove the WiFi interface, reboot, and return to re-enable sharing. Anyway, if all goes well and you’ve re-enabled sharing, your VM pings will start going through as the networking gets reconnected.
I’ve become quite used to doing this series of steps and have got it down to a quick few moments, but it always seems to catch me off-guard each time it happens. I hope it helps you a bit!