If you cannot access to LAN connection, there are few possibilities.
1. You IP is not in the same segment.
2. Your DNS server did not set correctly.
3. You Network Interface Card is spoiled.
4. Driver is not correct.
5. System board is spoiled.
If all these are not the reason there is still a last one I found.
6. Go to shutdown all you Hyper-V VM then restart your machine.