No network for Server 2022 in Hyper-v with 2012R2 host

[Bjarne_Ingelsson]

Greetings,

I'm having network issues running virtual Server 2022 in Hyper-V with a Server 2012 host. 

Neither of my two Server 2022 VM's have any network connection...?

First one was an upgrade from (a working) Server 2016 and second a clean install.

The Hyper-V host in question has multiple VM's ( 2008 -> 2019 + Linux ) and none of them have any network issues, only the newly added 2022's. I also tried to set static ip, but no go...same problem.

And yes, the 2022's use the same virtual switch as the working ones.

I can see in the dhcp-server (running wireshark) that the failing servers are sending DHCP Discover(s), and the dhcp-server replying with Offer(s) but the 2022's ignores these requests.

Interestingly, when running a virtual 2022 in a Win10 Hyper-V is works...

So, known feature or..?

/Bjarne

[#2]

The general rule of support is two versions above or below host OS, I'd also confirm here and with manufacturer about support for Server 2022

Windows Server Catalog

[#3 · Accepted solution]

Hello,

I have a similar situation and was able to get connectivity by shutting down Server2022 VM >> Remove Network Adaptor >> +Add Hardware >> Specifying Legacy Network Adapter. Legacy NIC is limited to 100mbps but it might be a temporary workaround until you can get your Hyper-V version upgraded to a more current level. 

Thanks,

Tim

 @Bjarne_Ingelsson 

[#4]

I can't thank you enough Tim!
It works perfectly, didn't even know about the legacy adapter(!) But hey, you learn something new every day :)
100Mbit limitation is not an issue, its just a TeamCity agent work horse for creating Server 2022 based docker images.

I owe you at least a beer!
/Bjarne