How to fix Hyper-v switch issue?

Question

Hyper-V

Hello! Such a disaster happened. Yesterday all switches worked. But today it just stopped. I tried everything: I reset the network settings, reinstalled the drivers for the wi-fi module and the LAN board. Tried the same thing through powershell.

Answer 1

Go to network settings. Find an adapter. Uncheck "Hyper-V Extensible Virtual Switch" in properties.
Try creating a new switch in hyper-v.

Answer 2

Try this change.

1. Save adapter settings on paper - static settings, mac-addresses on virtual adapters, mac-address ranges on virtual switches
   
2. And / or transfer virtual switches to the "Private network" type to decouple from adapters
   
3. Switch adapters to auto-configuration - free them from static settings
   
4. Delete all network adapters in device manager
   
5. Initiate a search for new devices. The system heroically finds network adapters
   
6. Return network settings
   

I don’t remember what exactly, but in this way I once cured some kind of ridiculous error on 2012 r2 with the network.
Advice in order to brainstorm, do not judge strictly.