Hyper v Core Server No active network adaptors

Are the network adapters drivers included with windows?

What Make/Model are they?

If they are installed, they should appear in the registry under the following key:-
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Class\{4D36E972-E325-11CE-BFC1-08002BE10318}

each key under this starting 0000 is a networking component. Always worth a look there first with Core or Hyper-V Server if you have NIC issues to see if the cards are present.

Hi thanks for quick response its a HP ML350 G6 2 onboard 1 pcix. All was working up to yesterday. This morning we found no VM in the hyper v manager re connected load vm 1 vm was ok the other had no network then we lost connection hyper so we restarted now no active cards

Hi cards are there maybe need to chane a option to enable can't find though

Our fix was to re-install the drivers again. So weird that it happens thou, the NIC's just dont get found even after several reboots.

Download the NIC drivers again, run the command pnputil -i -a "*.inf" (Where the INF is the INF of the drivers) and it will place them into the Driver Store on the server. Make sure the NIC's install correclty and that should or at least fixed out problem.

We haven't had a problem again after place the drivers in the store.

Hope that helps.

thanks, what i have done so far is i moved the pcix to a nother slot reboot server and that card came up now i need to do the 2 onboard nics. will try and download the drivers and do what u you say.

I had the same sconfig issue and this solved my problem. If I am being redundant, apologies.
https://www.virtuallyboring.com/microsoft-wmi-invalid-class-error-0x80041010/
After following this post, sconfig works as it should.