{"family":"windows11","family_label":"Windows 11","build":"26200.9818","base":"26200","tag":"25H2","kb":"KB5127936","kb_url":"https://support.microsoft.com/help/5127936","kb_title":"October 28, 2026 — KB5127936 (OS Builds 26300.9818 and 26200.9818) Preview","release_date":"2026-10-28","update_type":"2026-10 D","update_type_label":"Optional preview update","servicing":"General Availability Channel","ms_known_issues":[{"title":null,"symptom":"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.","applies_to":"","status":""}],"ms_none_known":false,"ms_highlights":"This update is available through two release phases: gradual rollout and normal rollout. A gradual rollout delivers an update in phases, so features reach devices over time instead of all at once, meaning availability varies by device. A normal rollout is the broad release to all eligible devices at the same time, usually when it reaches general availability (GA). Note If you installed earlier updates, your device downloads and installs only the new updates contained in this package. [Context menu in File Explorer] New! This update introduces an updated context menu that is faster, simpler, and more customizable. The updated menu opens more quickly, reduces clutter, and gives you more control over the commands and app extensions that appear when you right-click. You can now customize the context menu to better fit how you use Windows. Select Customize menu at the bottom of the context menu to open its Settings page. Turn built-in Windows commands, such as Send to and Create shortcut , on or off. Add commands such as Print to the context menu. Choose which app extensions appear in the main menu or a submenu or hide the app extensions submenu. 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I couldn’t verify change details for this exact build, so I won’t attribute specific fixes or features to it. 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