To get access to the Windows host from within WSL2, you need hostname.local (e.g. KG-X1-Carbon.local)

Also needed from an elevated PowerShell:

New-NetFirewallRule -DisplayName "WSL" -Direction Inbound  -InterfaceAlias "vEthernet (WSL)"  -Action Allow

See answer at https://stackoverflow.com/questions/65625762/wsl2-use-localhost-to-access-windows-service