Windows 11 KB5089549 was released on May 12, 2026 as a cumulative security update for Windows 11 versions 24H2 and 25H2, raising them to OS builds 26100.8457 and 26200.8457 respectively. It incorporates security fixes as well as improvements from Microsoft's previous April updates, including Xbox mode, File Explorer changes, better system tray loading reliability, Windows Hello improvements, and explorer.exe reliability work. The update contains a substantial collection of Windows 11 improvements, but some newly introduced experiences can still depend on Microsoft's gradual rollout system rather than appearing immediately on every PC.
What Windows 11 KB5089549 Includes
KB5089549 applies to Windows 11 version 24H2 and version 25H2. The update brings Windows 11 24H2 to build 26100.8457 and Windows 11 25H2 to build 26200.8457. It is a cumulative security release, meaning it also incorporates applicable fixes and improvements from earlier Windows updates.
| Item | Details |
|---|---|
| Release date | May 12, 2026 |
| Windows 11 24H2 | OS Build 26100.8457 |
| Windows 11 25H2 | OS Build 26200.8457 |
| Update type | Cumulative security update |
Post a Comment