Windows 11 · 25H2 · Release · Security update (Patch Tuesday)
Windows 11, version 25H2 (26200.9711)
- Release
- KB5127648 — Microsoft's article, opens in a new tab
- amd64
- arm64
Windows 11 25H2: Home/Pro supported through 2027-10-12; Enterprise/Education through 2028-10-10
Microsoft release information · Verified Oct 13, 2026
AI summary
Windows 11, version 25H2, build 26200.9711 is the October 13, 2026 release update (KB5127648). It includes security improvements and fixes for issues including Explorer crashes in multi-user environments, VPN connectivity, printing, and mouse stutter in some games. (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 — KB5127648
- Issue Known issue After installing the September 8, 2026, Windows security update (KB5124012), 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).” The device displays an error in Device Manager: "This device cannot start (Code 10).” No audio output. No audio output. Volume controls are unresponsive or remain at zero. Volume controls are unresponsive or remain at zero. Sound settings are unresponsive or unavailable. Sound settings are unresponsive or unavailable. Some devices might function in standard stereo configurations but fail wh Workaround: This issue is partially resolved in the out-of-band (OOB) update released on September 14, 2026, (KB5129195) . This OOB update resolves the symptoms experienced on devices using 8-channel or 3D audio modes. Microsoft is working to address the other symptoms and will provide more information when it is available. IT administrators who need an immediate workaround for the symptoms not addressed yet by the OOB update should contact Microsoft Support for Business for assistance.
Known issues — reported on the forum
In the news
- Coverage CISA KEV Adds Exploited Windows MOTW Bypass and Ivanti Connect Secure Flaw
- Fix October 2026 Patch Tuesday: 1,400 Fixes, Exploited Windows Shell Zero-Day and Support Deadlines
- Issue Windows 11 KB5127648 October 2026 Update Fixes VPN, AVD and Storage Issues
- Fix October 2026 Patch Tuesday: Excel paste finally fixed, File History restored, and 24H2 Home/Pro gets its last update
- Coverage Windows 11 October 2026 Update: 24H2 Home/Pro Support Ends, File Explorer and Copilot Key Changes
- Coverage Windows 11 23H2 Enterprise Support Ends November 2026: Upgrade to 25H2 or 26H2
Discussed on the forum
No member thread names 26200.9711 yet.