Windows 11 · 26H1 · Release · 2026-09 OOB
Windows 11, version 26H1 (28000.2956)
- Release
- KB5129194 — 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 28000.2956 delivers improved performance, strengthened security protections, and targeted bug fixes for greater reliability and stability. (support.microsoft.com)
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 — KB5129194
- Issue Known issue After installing the September 8, 2026, Windows security update, some USB Audio Class 1.0 devices might fail to start or produce audio. Affected devices might experience one or more of the following symptoms: The device displays an error in Device Manager: "This device cannot start (Code 10).” No audio output. Volume controls are unresponsive or remain at zero. Sound settings are unresponsive or unavailable. This issue is limited to USB Audio Class 1.0 devices. Workaround: Microsoft is working on a resolution and will update this documentation when more information is available.
Known issues — reported on the forum
Discussed on the forum
No member thread names 28000.2956 yet.