Microsoft Patches Released

Below is a list of patches released by Microsoft November, 2026.

articleIDsupportURLUpdateNameDescriptionArchitectureClassificationSeveritySupportedProducts
KB5131291https://support.microsoft.com/help/5131291https://www.catalog.update.microsoft.com/Search.aspx?q=51312912026-11 Cumulative Update for Windows 10 Version 1607 for x64-based Systems (KB5131291)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalWindows 10
KB5131291https://support.microsoft.com/help/5131291https://www.catalog.update.microsoft.com/Search.aspx?q=51312912026-11 Cumulative Update for Windows Server 2016 for x64-based Systems (KB5131291)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalWindows Server 2016
KB5131291https://support.microsoft.com/help/5131291https://www.catalog.update.microsoft.com/Search.aspx?q=51312912026-11 Cumulative Update for Windows 10 Version 1607 for x86-based Systems (KB5131291)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.X86Security UpdatesCriticalWindows 10
KB5131085https://support.microsoft.com/help/5131085https://www.catalog.update.microsoft.com/Search.aspx?q=51310852026-11 Cumulative Update for Windows Server 2019 for x64-based Systems (KB5131085)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalWindows Server 2019
KB5131085https://support.microsoft.com/help/5131085https://www.catalog.update.microsoft.com/Search.aspx?q=51310852026-11 Cumulative Update for Windows 10 Version 1809 for x64-based Systems (KB5131085)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalWindows 10 LTSB
KB5131085https://support.microsoft.com/help/5131085https://www.catalog.update.microsoft.com/Search.aspx?q=51310852026-11 Cumulative Update for Windows 10 Version 1809 for x86-based Systems (KB5131085)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.X86Security UpdatesCriticalWindows 10 LTSB
KB5131096https://support.microsoft.com/help/5131096https://www.catalog.update.microsoft.com/Search.aspx?q=51310962026-11 Cumulative Update for Windows 10 Version 22H2 for x64-based Systems (KB5131096)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalWindows 10, version 1903 and later
KB5131096https://support.microsoft.com/help/5131096https://www.catalog.update.microsoft.com/Search.aspx?q=51310962026-11 Cumulative Update for Windows 10 Version 22H2 for x86-based Systems (KB5131096)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.X86Security UpdatesCriticalWindows 10, version 1903 and later
KB5131096https://support.microsoft.com/help/5131096https://www.catalog.update.microsoft.com/Search.aspx?q=51310962026-11 Cumulative Update for Windows 10 Version 22H2 for ARM64-based Systems (KB5131096)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.ARM64Security UpdatesCriticalWindows 10, version 1903 and later
KB5131096https://support.microsoft.com/help/5131096https://www.catalog.update.microsoft.com/Search.aspx?q=51310962026-11 Cumulative Update for Windows 10 Version 21H2 for x64-based Systems (KB5131096)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalWindows 10 LTSB
KB5131096https://support.microsoft.com/help/5131096https://www.catalog.update.microsoft.com/Search.aspx?q=51310962026-11 Cumulative Update for Windows 10 Version 21H2 for ARM64-based Systems (KB5131096)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.ARM64Security UpdatesCriticalWindows 10 LTSB
KB5131096https://support.microsoft.com/help/5131096https://www.catalog.update.microsoft.com/Search.aspx?q=51310962026-11 Cumulative Update for Windows 10 Version 21H2 for x86-based Systems (KB5131096)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.X86Security UpdatesCriticalWindows 10 LTSB
KB5131090https://support.microsoft.com/help/5131090https://www.catalog.update.microsoft.com/Search.aspx?q=51310902026-11 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5131090)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalMicrosoft Server operating system-21H2
KB5131087https://support.microsoft.com/help/5131087https://www.catalog.update.microsoft.com/Search.aspx?q=51310872026-11 Cumulative Update for Windows 11, version 23H2 for arm64-based Systems (KB5131087)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5131087https://support.microsoft.com/help/5131087https://www.catalog.update.microsoft.com/Search.aspx?q=51310872026-11 Cumulative Update for Windows 11, version 23H2 for x64-based Systems (KB5131087)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5132061https://support.microsoft.com/help/5132061https://www.catalog.update.microsoft.com/Search.aspx?q=51320612026-11 Cumulative Update for Windows 11, version 24H2 for x64-based Systems (KB5132061) (26100.9974)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5132061https://support.microsoft.com/help/5132061https://www.catalog.update.microsoft.com/Search.aspx?q=51320612026-11 Cumulative Update for Windows 11, version 25H2 for arm64-based Systems (KB5132061) (26200.9974)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5132061https://support.microsoft.com/help/5132061https://www.catalog.update.microsoft.com/Search.aspx?q=51320612026-11 Cumulative Update for Windows 11, version 25H2 for x64-based Systems (KB5132061) (26200.9974)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5132061https://support.microsoft.com/help/5132061https://www.catalog.update.microsoft.com/Search.aspx?q=51320612026-11 Cumulative Update for Windows 11, version 26H2 for arm64-based Systems (KB5132061) (26300.9974)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5132061https://support.microsoft.com/help/5132061https://www.catalog.update.microsoft.com/Search.aspx?q=51320612026-11 Cumulative Update for Windows 11, version 26H2 for x64-based Systems (KB5132061) (26300.9974)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5132061https://support.microsoft.com/help/5132061https://www.catalog.update.microsoft.com/Search.aspx?q=51320612026-11 Cumulative Update for Windows 11, version 24H2 for arm64-based Systems (KB5132061) (26100.9974)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5131080https://support.microsoft.com/help/5131080https://www.catalog.update.microsoft.com/Search.aspx?q=51310802026-11 Cumulative Update for Microsoft server operating system version 24H2 for x64-based Systems (KB5131080) (26100.33822)Install this update to resolve issues in Microsoft server operating system, version 24H2. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalMicrosoft Server Operating System-24H2
KB5132059https://support.microsoft.com/help/5132059https://www.catalog.update.microsoft.com/Search.aspx?q=51320592026-11 Cumulative Update for Windows 11, version 26H1 for arm64-based Systems (KB5132059) (28000.3501)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5132059https://support.microsoft.com/help/5132059https://www.catalog.update.microsoft.com/Search.aspx?q=51320592026-11 Cumulative Update for Windows 11, version 26H1 for x64-based Systems (KB5132059) (28000.3501)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5124008https://support.microsoft.com/help/5124008https://www.catalog.update.microsoft.com/Search.aspx?q=51240082026-09 Cumulative Update for Windows 11, version 24H2 for x64-based Systems (KB5124008) (26100.9445)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5124008https://support.microsoft.com/help/5124008https://www.catalog.update.microsoft.com/Search.aspx?q=51240082026-09 Cumulative Update for Windows 11, version 25H2 for arm64-based Systems (KB5124008) (26200.9445)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5124008https://support.microsoft.com/help/5124008https://www.catalog.update.microsoft.com/Search.aspx?q=51240082026-09 Cumulative Update for Windows 11, version 24H2 for arm64-based Systems (KB5124008) (26100.9445)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5124008https://support.microsoft.com/help/5124008https://www.catalog.update.microsoft.com/Search.aspx?q=51240082026-09 Cumulative Update for Windows 11, version 25H2 for x64-based Systems (KB5124008) (26200.9445)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5126651https://support.microsoft.com/help/5126651https://www.catalog.update.microsoft.com/Search.aspx?q=51266512026-10 Cumulative Update for Windows 10 Version 1809 for x64-based Systems (KB5126651)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalWindows 10 LTSB
KB5126651https://support.microsoft.com/help/5126651https://www.catalog.update.microsoft.com/Search.aspx?q=51266512026-10 Cumulative Update for Windows 10 Version 1809 for x86-based Systems (KB5126651)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.X86Security UpdatesCriticalWindows 10 LTSB
KB5126651https://support.microsoft.com/help/5126651https://www.catalog.update.microsoft.com/Search.aspx?q=51266512026-10 Cumulative Update for Windows Server 2019 for x64-based Systems (KB5126651)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalWindows Server 2019
KB5126657https://support.microsoft.com/help/5126657https://www.catalog.update.microsoft.com/Search.aspx?q=51266572026-10 Cumulative Update for Windows 10 Version 22H2 for ARM64-based Systems (KB5126657)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.ARM64Security UpdatesCriticalWindows 10, version 1903 and later
KB5126657https://support.microsoft.com/help/5126657https://www.catalog.update.microsoft.com/Search.aspx?q=51266572026-10 Cumulative Update for Windows 10 Version 22H2 for x86-based Systems (KB5126657)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.X86Security UpdatesCriticalWindows 10, version 1903 and later
KB5126657https://support.microsoft.com/help/5126657https://www.catalog.update.microsoft.com/Search.aspx?q=51266572026-10 Cumulative Update for Windows 10 Version 21H2 for x64-based Systems (KB5126657)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalWindows 10 LTSB
KB5126657https://support.microsoft.com/help/5126657https://www.catalog.update.microsoft.com/Search.aspx?q=51266572026-10 Cumulative Update for Windows 10 Version 21H2 for x86-based Systems (KB5126657)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.X86Security UpdatesCriticalWindows 10 LTSB
KB5126657https://support.microsoft.com/help/5126657https://www.catalog.update.microsoft.com/Search.aspx?q=51266572026-10 Cumulative Update for Windows 10 Version 21H2 for ARM64-based Systems (KB5126657)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.ARM64Security UpdatesCriticalWindows 10 LTSB
KB5126657https://support.microsoft.com/help/5126657https://www.catalog.update.microsoft.com/Search.aspx?q=51266572026-10 Cumulative Update for Windows 10 Version 22H2 for x64-based Systems (KB5126657)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalWindows 10, version 1903 and later
KB5126655https://support.microsoft.com/help/5126655https://www.catalog.update.microsoft.com/Search.aspx?q=51266552026-10 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5126655)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalMicrosoft Server operating system-21H2
KB5126653https://support.microsoft.com/help/5126653https://www.catalog.update.microsoft.com/Search.aspx?q=51266532026-10 Cumulative Update for Windows 11, version 23H2 for arm64-based Systems (KB5126653)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5126653https://support.microsoft.com/help/5126653https://www.catalog.update.microsoft.com/Search.aspx?q=51266532026-10 Cumulative Update for Windows 11, version 23H2 for x64-based Systems (KB5126653)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5127648https://support.microsoft.com/help/5127648https://www.catalog.update.microsoft.com/Search.aspx?q=51276482026-10 Cumulative Update for Windows 11, version 24H2 for x64-based Systems (KB5127648) (26100.9711)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5127648https://support.microsoft.com/help/5127648https://www.catalog.update.microsoft.com/Search.aspx?q=51276482026-10 Cumulative Update for Windows 11, version 26H2 for x64-based Systems (KB5127648) (26300.9711)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5127648https://support.microsoft.com/help/5127648https://www.catalog.update.microsoft.com/Search.aspx?q=51276482026-10 Cumulative Update for Windows 11, version 25H2 for x64-based Systems (KB5127648) (26200.9711)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5127648https://support.microsoft.com/help/5127648https://www.catalog.update.microsoft.com/Search.aspx?q=51276482026-10 Cumulative Update for Windows 11, version 25H2 for arm64-based Systems (KB5127648) (26200.9711)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5127648https://support.microsoft.com/help/5127648https://www.catalog.update.microsoft.com/Search.aspx?q=51276482026-10 Cumulative Update for Windows 11, version 24H2 for arm64-based Systems (KB5127648) (26100.9711)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5127648https://support.microsoft.com/help/5127648https://www.catalog.update.microsoft.com/Search.aspx?q=51276482026-10 Cumulative Update for Windows 11, version 26H2 for arm64-based Systems (KB5127648) (26300.9711)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5126646https://support.microsoft.com/help/5126646https://www.catalog.update.microsoft.com/Search.aspx?q=51266462026-10 Cumulative Update for Microsoft server operating system version 24H2 for x64-based Systems (KB5126646) (26100.33650)Install this update to resolve issues in Microsoft server operating system, version 24H2. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalMicrosoft Server Operating System-24H2
KB5127646https://support.microsoft.com/help/5127646https://www.catalog.update.microsoft.com/Search.aspx?q=51276462026-10 Cumulative Update for Windows 11, version 26H1 for arm64-based Systems (KB5127646) (28000.3231)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5127646https://support.microsoft.com/help/5127646https://www.catalog.update.microsoft.com/Search.aspx?q=51276462026-10 Cumulative Update for Windows 11, version 26H1 for x64-based Systems (KB5127646) (28000.3231)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows Insider Pre-Release
KB5135243https://support.microsoft.com/help/5135243https://www.catalog.update.microsoft.com/Search.aspx?q=51352432026-11 .NET 8.0.34 Security Update for x86 Client (KB5135243)2026-11 .NET 8.0.34 Security Update for x86 Client (KB5135243)X86Security UpdatesImportant.NET 8.0
KB5135243https://support.microsoft.com/help/5135243https://www.catalog.update.microsoft.com/Search.aspx?q=51352432026-11 .NET 8.0.34 Security Update for x64 Server (KB5135243)2026-11 .NET 8.0.34 Security Update for x64 Server (KB5135243)AMD64Security UpdatesImportant.NET 8.0
KB5135243https://support.microsoft.com/help/5135243https://www.catalog.update.microsoft.com/Search.aspx?q=51352432026-11 .NET 8.0.34 Security Update for x64 Client (KB5135243)2026-11 .NET 8.0.34 Security Update for x64 Client (KB5135243)AMD64Security UpdatesImportant.NET 8.0
KB5135243https://support.microsoft.com/help/5135243https://www.catalog.update.microsoft.com/Search.aspx?q=51352432026-11 .NET 8.0.34 Security Update for ARM64 Client (KB5135243)2026-11 .NET 8.0.34 Security Update for ARM64 Client (KB5135243)ARM64Security UpdatesImportant.NET 8.0
KB5135242https://support.microsoft.com/help/5135242https://www.catalog.update.microsoft.com/Search.aspx?q=51352422026-11 .NET 9.0.23 Security Update for ARM64 Client (KB5135242)2026-11 .NET 9.0.23 Security Update for ARM64 Client (KB5135242)ARM64Security UpdatesImportant.NET 9.0
KB5135242https://support.microsoft.com/help/5135242https://www.catalog.update.microsoft.com/Search.aspx?q=51352422026-11 .NET 9.0.23 Security Update for x86 Client (KB5135242)2026-11 .NET 9.0.23 Security Update for x86 Client (KB5135242)X86Security UpdatesImportant.NET 9.0
KB5135242https://support.microsoft.com/help/5135242https://www.catalog.update.microsoft.com/Search.aspx?q=51352422026-11 .NET 9.0.23 Security Update for x64 Client (KB5135242)2026-11 .NET 9.0.23 Security Update for x64 Client (KB5135242)AMD64Security UpdatesImportant.NET 9.0
KB5135242https://support.microsoft.com/help/5135242https://www.catalog.update.microsoft.com/Search.aspx?q=51352422026-11 .NET 9.0.23 Security Update for x64 Server (KB5135242)2026-11 .NET 9.0.23 Security Update for x64 Server (KB5135242)AMD64Security UpdatesImportant.NET 9.0
KB5135241https://support.microsoft.com/help/5135241https://www.catalog.update.microsoft.com/Search.aspx?q=51352412026-11 .NET 10.0.15 Security Update for ARM64 Client (KB5135241)2026-11 .NET 10.0.15 Security Update for ARM64 Client (KB5135241)ARM64Security UpdatesImportant.NET 10.0
KB5135241https://support.microsoft.com/help/5135241https://www.catalog.update.microsoft.com/Search.aspx?q=51352412026-11 .NET 10.0.15 Security Update for x64 Server (KB5135241)2026-11 .NET 10.0.15 Security Update for x64 Server (KB5135241)AMD64Security UpdatesImportant.NET 10.0
KB5135241https://support.microsoft.com/help/5135241https://www.catalog.update.microsoft.com/Search.aspx?q=51352412026-11 .NET 10.0.15 Security Update for x86 Client (KB5135241)2026-11 .NET 10.0.15 Security Update for x86 Client (KB5135241)X86Security UpdatesImportant.NET 10.0
KB5135241https://support.microsoft.com/help/5135241https://www.catalog.update.microsoft.com/Search.aspx?q=51352412026-11 .NET 10.0.15 Security Update for x64 Client (KB5135241)2026-11 .NET 10.0.15 Security Update for x64 Client (KB5135241)AMD64Security UpdatesImportant.NET 10.0
KB5126835https://support.microsoft.com/help/5126835https://www.catalog.update.microsoft.com/Search.aspx?q=51268352026-10 Security Monthly Quality Rollup for Windows Server 2012 for x64-based Systems (KB5126835)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalWindows Server 2012
KB5126836https://support.microsoft.com/help/5126836https://www.catalog.update.microsoft.com/Search.aspx?q=51268362026-10 Security Monthly Quality Rollup for Windows Server 2012 R2 for x64-based Systems (KB5126836)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalWindows Server 2012 R2
KB5126868https://support.microsoft.com/help/5126868https://www.catalog.update.microsoft.com/Search.aspx?q=51268682026-10 Cumulative Update for Windows 10 Version 1607 for x64-based Systems (KB5126868)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalWindows 10
KB5126868https://support.microsoft.com/help/5126868https://www.catalog.update.microsoft.com/Search.aspx?q=51268682026-10 Cumulative Update for Windows Server 2016 for x64-based Systems (KB5126868)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalWindows Server 2016
KB5126868https://support.microsoft.com/help/5126868https://www.catalog.update.microsoft.com/Search.aspx?q=51268682026-10 Cumulative Update for Windows 10 Version 1607 for x86-based Systems (KB5126868)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.X86Security UpdatesCriticalWindows 10
KB5002945https://support.microsoft.com/help/5002945https://www.catalog.update.microsoft.com/Search.aspx?q=5002945Security Update for Microsoft SharePoint Server Subscription Edition (KB5002945)A security vulnerability exists in Microsoft SharePoint Server Subscription Editionn/aSecurity UpdatesImportantSharePoint Server Subscription Edition
KB5002946https://support.microsoft.com/help/5002946https://www.catalog.update.microsoft.com/Search.aspx?q=5002946Security Update for Microsoft Office Online Server (KB5002946)A security vulnerability exists in Microsoft Office Online Servern/aSecurity UpdatesImportantSharePoint Server 2019/Office Online Server
KB5132748https://support.microsoft.com/help/5132748https://www.catalog.update.microsoft.com/Search.aspx?q=5132748Security Update for SQL Server 2025 RTM GDR (KB5132748)Security issues have been identified in the SQL Server 2025 RTM GDR that could allow an attacker to compromise your system and gain control over it. You can help protect your computer by installing this update from Microsoft. After you install this item, you may have to restart your computer.n/aSecurity UpdatesImportantMicrosoft SQL Server 2025
KB5129299https://support.microsoft.com/help/5129299https://www.catalog.update.microsoft.com/Search.aspx?q=5129299Security Update for SQL Server 2025 RTM CU (KB5129299)Security issues have been identified in the SQL Server 2025 RTM CU that could allow an attacker to compromise your system and gain control over it. You can help protect your computer by installing this update from Microsoft. After you install this item, you may have to restart your computer.n/aSecurity UpdatesImportantMicrosoft SQL Server 2025
KB5132751https://support.microsoft.com/help/5132751https://www.catalog.update.microsoft.com/Search.aspx?q=5132751Security Update for SQL Server 2019 RTM GDR (KB5132751)Security issues have been identified in the SQL Server 2019 RTM GDR that could allow an attacker to compromise your system and gain control over it. You can help protect your computer by installing this update from Microsoft. After you install this item, you may have to restart your computer.n/aSecurity UpdatesImportantMicrosoft SQL Server 2019
KB5132749https://support.microsoft.com/help/5132749https://www.catalog.update.microsoft.com/Search.aspx?q=5132749Security Update for SQL Server 2017 RTM GDR (KB5132749)Security issues have been identified in the SQL Server 2017 RTM GDR that could allow an attacker to compromise your system and gain control over it. You can help protect your computer by installing this update from Microsoft. After you install this item, you may have to restart your computer.n/aSecurity UpdatesImportantMicrosoft SQL Server 2017
KB5132747https://support.microsoft.com/help/5132747https://www.catalog.update.microsoft.com/Search.aspx?q=5132747Security Update for SQL Server 2022 RTM GDR (KB5132747)Security issues have been identified in the SQL Server 2022 RTM GDR that could allow an attacker to compromise your system and gain control over it. You can help protect your computer by installing this update from Microsoft. After you install this item, you may have to restart your computer.n/aSecurity UpdatesImportantMicrosoft SQL Server 2022
KB5129300https://support.microsoft.com/help/5129300https://www.catalog.update.microsoft.com/Search.aspx?q=5129300Security Update for SQL Server 2022 RTM CU (KB5129300)Security issues have been identified in the SQL Server 2022 RTM CU that could allow an attacker to compromise your system and gain control over it. You can help protect your computer by installing this update from Microsoft. After you install this item, you may have to restart your computer.n/aSecurity UpdatesImportantMicrosoft SQL Server 2022
KB5132745https://support.microsoft.com/help/5132745https://www.catalog.update.microsoft.com/Search.aspx?q=5132745Security Update for SQL Server 2019 RTM CU (KB5132745)Security issues have been identified in the SQL Server 2019 RTM CU that could allow an attacker to compromise your system and gain control over it. You can help protect your computer by installing this update from Microsoft. After you install this item, you may have to restart your computer.n/aSecurity UpdatesImportantMicrosoft SQL Server 2019
KB5132746https://support.microsoft.com/help/5132746https://www.catalog.update.microsoft.com/Search.aspx?q=5132746Security Update for SQL Server 2017 RTM CU (KB5132746)Security issues have been identified in the SQL Server 2017 RTM CU that could allow an attacker to compromise your system and gain control over it. You can help protect your computer by installing this update from Microsoft. After you install this item, you may have to restart your computer.n/aSecurity UpdatesImportantMicrosoft SQL Server 2017
KB5126967https://support.microsoft.com/help/5126967https://www.catalog.update.microsoft.com/Search.aspx?q=5126967Security Update for SQL Server 2025 RTM CU (KB5126967)Security issues have been identified in the SQL Server 2025 RTM CU that could allow an attacker to compromise your system and gain control over it. You can help protect your computer by installing this update from Microsoft. After you install this item, you may have to restart your computer.n/aSecurity UpdatesImportantMicrosoft SQL Server 2025
KB5133453https://support.microsoft.com/help/5133453https://www.catalog.update.microsoft.com/Search.aspx?q=5133453Security Update For Exchange Server Subscription Edition (KB5133453)The update addresses the fixes descripted in the KBn/aSecurity Updatesn/aExchange Server Subscription Edition
KB5121003https://support.microsoft.com/help/5121003https://www.catalog.update.microsoft.com/Search.aspx?q=51210032026-08 Cumulative Update for Windows 11, version 24H2 for x64-based Systems (KB5121003) (26100.9168)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5121003https://support.microsoft.com/help/5121003https://www.catalog.update.microsoft.com/Search.aspx?q=51210032026-08 Cumulative Update for Windows 11, version 25H2 for arm64-based Systems (KB5121003) (26200.9168)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5121003https://support.microsoft.com/help/5121003https://www.catalog.update.microsoft.com/Search.aspx?q=51210032026-08 Cumulative Update for Windows 11, version 24H2 for arm64-based Systems (KB5121003) (26100.9168)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5121003https://support.microsoft.com/help/5121003https://www.catalog.update.microsoft.com/Search.aspx?q=51210032026-08 Cumulative Update for Windows 11, version 25H2 for x64-based Systems (KB5121003) (26200.9168)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5120233https://support.microsoft.com/help/5120233https://www.catalog.update.microsoft.com/Search.aspx?q=51202332026-08 Cumulative Update for Microsoft server operating system version 24H2 for x64-based Systems (KB5120233) (26100.33296)Install this update to resolve issues in Microsoft server operating system, version 24H2. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalMicrosoft Server Operating System-24H2
KB5121000https://support.microsoft.com/help/5121000https://www.catalog.update.microsoft.com/Search.aspx?q=51210002026-08 Cumulative Update for Windows 11, version 26H1 for x64-based Systems (KB5121000) (28000.2704)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows Insider Pre-Release
KB5121000https://support.microsoft.com/help/5121000https://www.catalog.update.microsoft.com/Search.aspx?q=51210002026-08 Cumulative Update for Windows 11, version 26H1 for arm64-based Systems (KB5121000) (28000.2704)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5131083https://support.microsoft.com/help/5131083https://www.catalog.update.microsoft.com/Search.aspx?q=51310832026-11 Servicing Stack Update for Windows 10 Version 1607 for x64-based Systems (KB5131083)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.AMD64Security UpdatesCriticalWindows 10
KB5131083https://support.microsoft.com/help/5131083https://www.catalog.update.microsoft.com/Search.aspx?q=51310832026-11 Servicing Stack Update for Windows 10 Version 1607 for x86-based Systems (KB5131083)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.X86Security UpdatesCriticalWindows 10
KB5131083https://support.microsoft.com/help/5131083https://www.catalog.update.microsoft.com/Search.aspx?q=51310832026-11 Servicing Stack Update for Windows Server 2016 for x64-based Systems (KB5131083)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.AMD64Security UpdatesCriticalWindows Server 2016
KB5002908https://support.microsoft.com/help/5002908https://www.catalog.update.microsoft.com/Search.aspx?q=5002908Security Update for Microsoft SharePoint Server Subscription Edition (KB5002908)A security vulnerability exists in Microsoft SharePoint Server Subscription Editionn/aSecurity UpdatesImportantSharePoint Server Subscription Edition
KB5002927https://support.microsoft.com/help/5002927https://www.catalog.update.microsoft.com/Search.aspx?q=5002927Security Update for Microsoft SharePoint Server Subscription Edition (KB5002927)A security vulnerability exists in Microsoft SharePoint Server Subscription Editionn/aSecurity UpdatesImportantSharePoint Server Subscription Edition
KB5123099https://support.microsoft.com/help/5123099https://www.catalog.update.microsoft.com/Search.aspx?q=51230992026-09 Cumulative Update for Windows Server 2016 for x64-based Systems (KB5123099)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalWindows Server 2016
KB5123099https://support.microsoft.com/help/5123099https://www.catalog.update.microsoft.com/Search.aspx?q=51230992026-09 Cumulative Update for Windows 10 Version 1607 for x86-based Systems (KB5123099)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.X86Security UpdatesCriticalWindows 10
KB5123099https://support.microsoft.com/help/5123099https://www.catalog.update.microsoft.com/Search.aspx?q=51230992026-09 Cumulative Update for Windows 10 Version 1607 for x64-based Systems (KB5123099)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalWindows 10
KB5122876https://support.microsoft.com/help/5122876https://www.catalog.update.microsoft.com/Search.aspx?q=51228762026-09 Cumulative Update for Windows Server 2019 for x64-based Systems (KB5122876)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalWindows Server 2019
KB5122876https://support.microsoft.com/help/5122876https://www.catalog.update.microsoft.com/Search.aspx?q=51228762026-09 Cumulative Update for Windows 10 Version 1809 for x86-based Systems (KB5122876)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.X86Security UpdatesCriticalWindows 10 LTSB
KB5122876https://support.microsoft.com/help/5122876https://www.catalog.update.microsoft.com/Search.aspx?q=51228762026-09 Cumulative Update for Windows 10 Version 1809 for x64-based Systems (KB5122876)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalWindows 10 LTSB
KB5122878https://support.microsoft.com/help/5122878https://www.catalog.update.microsoft.com/Search.aspx?q=51228782026-09 Cumulative Update for Windows 10 Version 21H2 for x86-based Systems (KB5122878)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.X86Security UpdatesCriticalWindows 10 LTSB
KB5122878https://support.microsoft.com/help/5122878https://www.catalog.update.microsoft.com/Search.aspx?q=51228782026-09 Cumulative Update for Windows 10 Version 22H2 for ARM64-based Systems (KB5122878)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.ARM64Security UpdatesCriticalWindows 10, version 1903 and later
KB5122878https://support.microsoft.com/help/5122878https://www.catalog.update.microsoft.com/Search.aspx?q=51228782026-09 Cumulative Update for Windows 10 Version 22H2 for x64-based Systems (KB5122878)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalWindows 10, version 1903 and later
KB5122878https://support.microsoft.com/help/5122878https://www.catalog.update.microsoft.com/Search.aspx?q=51228782026-09 Dynamic Cumulative Update for Windows 10 Version 21H2 for ARM64-based Systems (KB5122878)ComponentUpdate: A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.n/aSecurity UpdatesCriticalWindows 10 and later GDR-DU
KB5122878https://support.microsoft.com/help/5122878https://www.catalog.update.microsoft.com/Search.aspx?q=51228782026-09 Cumulative Update for Windows 10 Version 21H2 for ARM64-based Systems (KB5122878)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.ARM64Security UpdatesCriticalWindows 10 LTSB
KB5122878https://support.microsoft.com/help/5122878https://www.catalog.update.microsoft.com/Search.aspx?q=51228782026-09 Dynamic Cumulative Update for Windows 10 Version 21H2 for x64-based Systems (KB5122878)ComponentUpdate: A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.n/aSecurity UpdatesCriticalWindows 10 and later GDR-DU
KB5122878https://support.microsoft.com/help/5122878https://www.catalog.update.microsoft.com/Search.aspx?q=51228782026-09 Cumulative Update for Windows 10 Version 22H2 for x86-based Systems (KB5122878)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.X86Security UpdatesCriticalWindows 10, version 1903 and later
KB5122878https://support.microsoft.com/help/5122878https://www.catalog.update.microsoft.com/Search.aspx?q=51228782026-09 Dynamic Cumulative Update for Windows 10 Version 21H2 for x86-based Systems (KB5122878)ComponentUpdate: A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.n/aSecurity UpdatesCriticalWindows 10 and later GDR-DU
KB5122878https://support.microsoft.com/help/5122878https://www.catalog.update.microsoft.com/Search.aspx?q=51228782026-09 Cumulative Update for Windows 10 Version 21H2 for x64-based Systems (KB5122878)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalWindows 10 LTSB
KB5122882https://support.microsoft.com/help/5122882https://www.catalog.update.microsoft.com/Search.aspx?q=51228822026-09 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5122882)A security issue has been identified in a Microsoft software product that could affect your system. You can help protect your system by installing this update from Microsoft. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article. After you install this update, you may have to restart your system.AMD64Security UpdatesCriticalMicrosoft Server operating system-21H2
KB5122880https://support.microsoft.com/help/5122880https://www.catalog.update.microsoft.com/Search.aspx?q=51228802026-09 Cumulative Update for Windows 11, version 23H2 for x64-based Systems (KB5122880)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5122880https://support.microsoft.com/help/5122880https://www.catalog.update.microsoft.com/Search.aspx?q=51228802026-09 Cumulative Update for Windows 11, version 23H2 for arm64-based Systems (KB5122880)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
KB5122871https://support.microsoft.com/help/5122871https://www.catalog.update.microsoft.com/Search.aspx?q=51228712026-09 Cumulative Update for Microsoft server operating system version 24H2 for x64-based Systems (KB5122871) (26100.33438)Install this update to resolve issues in Microsoft server operating system, version 24H2. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalMicrosoft Server Operating System-24H2
KB5124012https://support.microsoft.com/help/5124012https://www.catalog.update.microsoft.com/Search.aspx?q=51240122026-09 Cumulative Update for Windows 11, version 26H1 for x64-based Systems (KB5124012) (28000.2954)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows Insider Pre-Release
KB5124012https://support.microsoft.com/help/5124012https://www.catalog.update.microsoft.com/Search.aspx?q=51240122026-09 Cumulative Update for Windows 11, version 26H1 for arm64-based Systems (KB5124012) (28000.2954)Install this update to resolve issues in Windows. For a complete listing of the issues that are included in this update, see the associated Microsoft Knowledge Base article for more information. After you install this item, you may have to restart your computer.n/aSecurity UpdatesCriticalWindows 11
View November 2026 Test Report