For all windows 10, windows 8.1 and windows 7 ESU customers who are still in support, Microsoft released the cumulative update as scheduled on the Patch Tuesday activity day yesterday. However, after installing kb4571756, users of windows 10 may 2020 (version 2004) reported that windows subsystem for Linux 2 (WSL 2) could not work normally.
After the cumulative update is installed, the version number rises to build 19041.508. However, the user said that after upgrading, WSL 2 could not be loaded normally, and "element not found error" was displayed. It is not clear how many users have been affected and what problems caused the problem.
Although the known problems in KB article do not list WSL 2 problems, the response on GitHub shows that the company is working hard to fix it. For those running production builds that depend on WSL 2, it is best to suspend the installation of the latest updates.