https://www.bleepingcomputer.com/news/microsoft/windows-11-kb5013943-update-fixes-screen-flickers-and-net-app-issues/ > Microsoft has released the Windows 11 KB5013943 cumulative update with security updates, improvements, and fixes for screen flickers in Safe Mode and a bug causing some NET 3.5 apps not to open. > KB5013943 is a mandatory cumulative update as it contains the May 2022 Patch Tuesday security updates for vulnerabilities discovered in previous months.