Windows 10 KB4571756 Update Breaks WSL 2
Multiple Windows 10 version 2004 users are reporting they're unable to launch WSL 2 after installing security update, detailed in KB4571756.
Windows Subsystem for Linux Explained, WSL & WSL2
The Windows Subsystem for Linux (WSL) is an excellent solution for users to natively work within Linux on their Windows desktops.