August 27, 2026—KB5120996 (OS Build 28000.2804) Preview

August 27, 2026—KB5120996 OS Build 28000.2804 Preview Applies To Windows 11 version 26H1, all editions This cumulative update for Windows 11, version 26H1 KB5120996, includes production-quality improvements. Announcements and messages This section provides key notifications related to this releas...