Windows 11 · 26H1 · Release · Security update (Patch Tuesday)
Windows 11, version 26H1 (28000.2525)
- Release
- KB5101649 — Microsoft's article, opens in a new tab
- amd64
- arm64
Windows 11 26H1: Ships on new silicon only
AI summary
Windows 11, version 26H1 (build 28000.2525) delivers platform-level performance tuning for next-generation silicon, security updates, and targeted stability bug fixes.
Generated from the package's release notes and forum coverage. Verify against Microsoft's release-health page before acting on it.
Microsoft's known issues — KB5101649
Microsoft lists no known issues for this update (KB5101649).
Known issues — reported on the forum
In the news
- Fix KB5101649 Fixes CVE-2026-58529 on Windows 11 26H1
- Issue KB5101649 Fixes Windows 11 26H1 DWM Elevation Bug CVE-2026-58634
- Fix KB5101649 Fixes CVE-2026-58633 DWM Privilege Escalation
- Fix CVE-2026-50428: Install KB5101649 to Fix Windows 11 26H1 Leak
- Coverage Windows 11 26H1 Multi-App Camera Gets Group Policy in Build 28000.2333
- Coverage Windows 11 26H1 Beta: Default Pilot Branch for Snapdragon X2
- Coverage Windows 11 26H1: Snapdragon X2 PCs Only, No Upgrade Path
- Coverage Windows Insider Channels: Map 26H1, 26H2 and Future Platforms
Discussed on the forum
No member thread names 28000.2525 yet.