Enabling Hyper-V on Windows 10 21H2 cuts internet connection

Sebastian Gfeller 1 Reputation point
2021-12-28T11:49:37.647+00:00

From a pristine Windows 10 21H2 install on my HP EliteDesk 705 G3, I turn on the Hyper-V feature with all subcomponents. Upon restarting I no longer have an internet connection. Looking at the adapters I see that the physical adapter is marked as unplugged (even though it is clearly plugged). Do you have any pointers for me on what to check to allow Hyper-V to work on my machine?

160884-05-network-connections-changed.png

Note that this is before any virtual machines are created at all. In the Virtual Switch Manager I just see the automatically created default switch.

160885-06-default-switch-created-cant-remove.png

Turning the feature off again re-enables the network connection, but if I were actually able to use Hyper-V on my computer it'd be better :-)

Hyper-V
Hyper-V
A Windows technology providing a hypervisor-based virtualization solution enabling customers to consolidate workloads onto a single server.
2,546 questions
Windows 10 Network
Windows 10 Network
Windows 10: A Microsoft operating system that runs on personal computers and tablets.Network: A group of devices that communicate either wirelessly or via a physical connection.
2,274 questions
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  1. Jörg Wiesemann 1 Reputation point
    2022-01-05T15:19:46.73+00:00

    Hi ,
    I did just installed Hyper-V on my Windows 10 21H2 Workstation
    I experienced the same behaviour.

    What i did to solve this was following.
    I went in to the settings for the adapter that was the connected to Hyper-V. in My case I had renamed it to "Internet"

    163646-skarmbild-2022-01-10-numb1.jpg

    I then delete the checkbox for Hyper-V Extensible Switch.
    When i did that, the settings on the adapter was restored. And the Deafult Hyper-v Adapter disappeared in the Network Settings.
    I now went in to Hyper-V Manager and created my own Virtual-Switch that i called VNET-External Connection.
    With following settings

    163695-skarmbild-2022-01-10-numb2.jpg

    Now i had following adapters in Network Setting on the workstation. I had to set upp my DNS on the VNET adapter again and now it works fine.

    163721-skarmbild-2022-01-10-numb3.jpg

    I do not know if that is the right way do fix but it worked for me.

    /Regards
    Jörg Wiesemann

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  2. Sebastian Gfeller 1 Reputation point
    2022-01-10T08:54:33.663+00:00

    Hello Jörg,
    Unfortunately I can't see the screenshots you posted. I'll see whether there are other options.

    Best,
    Sebastian