https://www.bleepingcomputer.com/news/microsoft/windows-11-kb5055523-and-kb5055528-cumulative-updates-released/ > Microsoft has released Windows 11 KB5055523 and KB5055528 cumulative updates for versions 24H2 and 23H2 to fix security vulnerabilities and issues. > Today's updates are mandatory as they contain the April 2025 Patch Tuesday security patches for vulnerabilities discovered in previous months.