{"family":"windows11","family_label":"Windows 11","build":"28000.2340","base":"28000","tag":"26H1","kb":"KB5095091","kb_url":"https://support.microsoft.com/help/5095091","kb_title":"June 23, 2026—KB5095091 (OS Build 28000.2340) Preview","release_date":"2026-06-23","update_type":"2026-06 D","update_type_label":"Optional preview update","servicing":"General Availability Channel","ms_known_issues":[{"title":null,"symptom":"Microsoft has received reports of an issue in which certain third-party applications might be unable to launch Microsoft Office applications or open documents after installing the Windows updates released on or after June 9, 2026. This issue affects certain third-party applications that use OLE automation to interact with Microsoft Office applications. In some cases, the Office application or document might fail to open without displaying an error message. Affected Microsoft Office applications might include Word, Excel, PowerPoint, Access, and other Microsoft Office applications when launched from within the affected third-party application. Reports indicate that this issue may affect appli","workaround":"This issue is resolved in Windows updates released on and after July 14, 2026 such as KB5101649 . We recommend you install the latest Windows update for your device as it contains important improvements and issue resolutions, including this one.","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). Gradual rollout Normal rollout The following summary outlines features from AI-powered Windows 11 PC experiences, along with improvements and fixes. The bold text within the brackets indicates the item or area of the change. [Point-in-time restore for Windows] New! This flexible recovery feature helps you quickly roll back your PC, including apps, settings, and personal files, to a recent automatic restore point. It helps reduce downtime and simplifies troubleshooting when issues occur. To learn more, see Point-in-time restore for Windows . [Point-in-time restore for Windows] New! This flexible recovery feature helps you quickly roll back your PC, including apps, settings, and personal files, to a recent automatic restore point. It helps reduce downtime and simplifies troubleshooting when issues occur. 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