{"family":"windows11","family_label":"Windows 11","build":"28000.3365","base":"28000","tag":"26H1","kb":"KB5127653","kb_url":"https://support.microsoft.com/help/5127653","kb_title":"October 28, 2026—KB5127653 (OS Builds 28000.3365) 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. The following summary outlines new Windows 11 PC experiences, along with improvements and fixes. The bold text within the brackets indicates the item or area of the change. [File Explorer] New! This update adjusts how the preview pane handles files downloaded from the web. For HTML files, a new Preview anyway button lets you acknowledge the warning and preview the file. Non-HTML files, such as PDFs, are now previewed automatically. New! File Explorer Home now preserves the state of sections (expanded or collapsed), so you can pick up where you left off. New! This update improves the reliability of thumbnail previews for cloud files in the Details pane. The pane has also been reorganized, so file proper","title":"Windows 11, version 26H1 (28000.3365)","build_type":"release","channel_label":"Release","branch":null,"kind":null,"kind_label":null,"is_dotnet":false,"status":null,"line":{"status":"silicon","note":"For specific new hardware; not a feature update for existing PCs","support":{"enterprise_education":"2029-03-13","home_pro":"2028-03-14"},"availability_date":"2026-02-10","source_url":"https://learn.microsoft.com/en-us/windows/release-health/windows11-release-information","verified_at":1793312136,"stale":false,"servicing_exceptions":[]},"created":1793208201,"created_iso":"2026-10-28T17:23:21Z","uuid":"8f550c54-da87-45d3-89e3-0c03a6f16ae8","permalink":"/builds/windows11/28000.3365/","tag_url":"/builds/windows11/26h1/","index_url":"/builds/windows11/","api_url":"https://search.windowsforum.com/api/builds/build/windows11/28000.3365","records":[{"uuid":"8f550c54-da87-45d3-89e3-0c03a6f16ae8","title":"Windows 11, version 26H1 (28000.3365)","build":"28000.3365","arch":"amd64","created":1793208201,"created_iso":"2026-10-28T17:23:21Z","build_type":"release","channel_label":"Release","branch":null,"kind":null,"kind_label":null,"status":null,"kb":null,"download_url":"https://uupdump.net/selectlang.php?id=8f550c54-da87-45d3-89e3-0c03a6f16ae8"},{"uuid":"e8706433-04f4-4a00-b58f-df8ed1bab586","title":"Windows 11, version 26H1 (28000.3365)","build":"28000.3365","arch":"arm64","created":1793208203,"created_iso":"2026-10-28T17:23:23Z","build_type":"release","channel_label":"Release","branch":null,"kind":null,"kind_label":null,"status":null,"kb":null,"download_url":"https://uupdump.net/selectlang.php?id=e8706433-04f4-4a00-b58f-df8ed1bab586"}],"summary":"Windows 11, version 26H1 (build 28000.3365), is the Release-channel 2026-10 D optional preview update (KB5127653), delivered in gradual and normal rollout phases. It adds a “Preview anyway” option for downloaded HTML files in File Explorer; Microsoft also notes a possible USB Audio Class 1.0 issue after the September 8, 2026 security update.","known_issues":[{"thread_id":449784,"node_id":4,"title":"Windows 11 Build 28020.3292 Adds Unicode 17.0 Text Shaping, Has Recall Clean-Install Bug","replies":0,"views":245,"post_date":1792782176,"last_post_date":1792782176,"url":"https://windowsforum.com/news/windows-11-build-28020-3292-adds-unicode-17-0-text-shaping-has-recall-clean-install-bug.449784/","kind":"issue","match":"exact","pinned":true,"score":2.0}],"linked":{"news":[{"thread_id":449784,"node_id":4,"title":"Windows 11 Build 28020.3292 Adds Unicode 17.0 Text Shaping, Has Recall Clean-Install Bug","replies":0,"views":245,"post_date":1792782176,"last_post_date":1792782176,"url":"https://windowsforum.com/news/windows-11-build-28020-3292-adds-unicode-17-0-text-shaping-has-recall-clean-install-bug.449784/","kind":"issue","match":"exact","pinned":true,"score":2.0},{"thread_id":448964,"node_id":4,"title":"Windows 11 Accelerated Warm Launches: How Edge Skips Extra Processes for Faster App Activation","replies":0,"views":253,"post_date":1792306945,"last_post_date":1792306945,"url":"https://windowsforum.com/news/windows-11-accelerated-warm-launches-how-edge-skips-extra-processes-for-faster-app-activation.448964/","kind":"coverage","match":"exact","pinned":true,"score":2.0},{"thread_id":448682,"node_id":4,"title":"Windows 11 26H1 KB5127653 Release Preview: Copilot Key Remapping, WinRE Wi-Fi and RDP Fix","replies":0,"views":236,"post_date":1792173925,"last_post_date":1792173925,"url":"https://windowsforum.com/news/windows-11-26h1-kb5127653-release-preview-copilot-key-remapping-winre-wi-fi-and-rdp-fix.448682/","kind":"fix","match":"exact","pinned":true,"score":2.0},{"thread_id":450105,"node_id":4,"title":"KB5134134 Updates Root Certificates for Offline Windows 11 26H1 PCs","replies":0,"views":304,"post_date":1793052311,"last_post_date":1793052311,"url":"https://windowsforum.com/news/kb5134134-updates-root-certificates-for-offline-windows-11-26h1-pcs.450105/","kind":"coverage","match":"line","pinned":false,"score":0.98}],"tutorials":[],"threads":[],"total":4,"exact":3,"window_days":45},"related":{"history":[{"build":"28000.3365","title":"Windows 11, version 26H1 (28000.3365)","created":1793208201,"kb":"KB5127653","build_type":"release","channel_label":"Release","kind":null,"url":"/builds/windows11/28000.3365/","current":true},{"build":"28000.3351","title":"Preview Update for Windows 11 (28000.3351)","created":1792170341,"kb":null,"build_type":"release-preview","channel_label":"Release Preview","kind":"cumulative","url":"/builds/windows11/28000.3351/","current":false},{"build":"28000.3237","title":"Preview Update for Windows 11 (28000.3237)","created":1793061550,"kb":"KB5134134","build_type":"release","channel_label":"Release","kind":"cumulative","url":"/builds/windows11/28000.3237/","current":false},{"build":"28000.3231","title":"Windows 11, version 26H1 (28000.3231)","created":1791910811,"kb":"KB5127646","build_type":"release","channel_label":"Release","kind":null,"url":"/builds/windows11/28000.3231/","current":false},{"build":"28000.3230","title":"Critical OOBE Update for Windows 11 - KB5132441 (28000.3230)","created":1791910809,"kb":"KB5132441","build_type":"release","channel_label":"Release","kind":"cumulative","url":"/builds/windows11/28000.3230/","current":false},{"build":"28000.3086","title":"Windows 11, version 26H1 (28000.3086)","created":1790971938,"kb":"KB5124006","build_type":"release","channel_label":"Release","kind":null,"url":"/builds/windows11/28000.3086/","current":false},{"build":"28000.3079","title":"Preview Update for Windows 11 (28000.3079)","created":1789150912,"kb":null,"build_type":"release-preview","channel_label":"Release Preview","kind":"cumulative","url":"/builds/windows11/28000.3079/","current":false},{"build":"28000.3076","title":"Critical OOBE Update for Windows 11 - KB5124014 (28000.3076)","created":1790096416,"kb":"KB5124014","build_type":"release","channel_label":"Release","kind":"cumulative","url":"/builds/windows11/28000.3076/","current":false}],"history_total":40,"prev":{"build":"28000.3351","title":"Preview Update for Windows 11 (28000.3351)","created":1792170341,"kb":null,"build_type":"release-preview","channel_label":"Release Preview","kind":"cumulative","url":"/builds/windows11/28000.3351/","current":false},"next":null,"wave":[]},"source":"uup","indexable":true,"generated":1793317063}