Pre-requirements

• Windows 10 May 2020 (2004) // or older Windows 10 May 2019 (1903) / or Windows 10 November 2019 (1909)
• A computer with Hyper-V Virtualization support

Steps Overview

• Enable WSL 2
• Enable ‘Virtual Machine Platform’
• Set WSL 2 as default
• Install a Linux distro
• Download the lateest kernel to update [ref]

Powershell CML

dism.exe /online /enable-feature /featurename:Microsoft-Windows-Subsystem-Linux /all /norestart  # Enable WSL
dism.exe /online /enable-feature /featurename:VirtualMachinePlatform /all /norestart  # Enable ‘Virtual Machine Platform’
# Enable-WindowsOptionalFeature -Online -FeatureName VirtualMachinePlatform -NoRestart  # older win10
wsl --set-version Ubuntu 2  # convert current installed
wsl --set-default-version 2  # for future installations

ref: OMG Ubuntu.co.uk

Debug

cannot resovle domains

Solution: disable auto-generation of resolv.conf by editing /etc/wsl.conf inside the WSL sys:

[network]
generateResolvConf = false

then shutdown WSL to restart WSL so this config could take effect by wsl.exe --shutdown.
Later, the /etc/resolv.conf could be modified as needed.

no network

::=============================================================================
::FIX WSL2 NETWORKING IN WINDOWS 10
::=============================================================================
cmd as admin:
wsl --shutdown
netsh winsock reset
netsh int ip reset all
netsh winhttp reset proxy
ipconfig /flushdns
:: and restart windows

If does not work, do the following inside WSL before the above commands in Windows.

# Fix network issues
# Delete auto-generated files
[[email protected] user]# rm /etc/resolv.conf || true
[[email protected] user]# rm /etc/wsl.conf || true

# Enable changing /etc/resolv.conf
# Enable extended attributes on Windows drives
[[email protected] user]# cat <<EOF > /etc/wsl.conf
[network]
generateResolvConf = false

[automount]
enabled = true
options = "metadata"
mountFsTab = false
EOF

# Use cn & google nameservers for DNS resolution
[[email protected] user]# cat <<EOF > /etc/resolv.conf
nameserver 114.114.114.114
nameserver 8.8.4.4
EOF

ref: github