The December 13, 2022 update (OS Build , KB5021233) was the final cumulative update for Windows 10, version 21H1. This update primarily addressed security vulnerabilities, including:
: Critical fixes for various Windows components and the .NET Framework . windows-10-21h1-full-december-2022-kuyhaa
: This marked the End of Servicing for Home, Pro, Education, and Enterprise editions. Key Features of 21H1 The December 13, 2022 update (OS Build ,