September 8, 2026—KB5122871 (OS Build 26100.33438)

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September 8, 2026—KB5122876 (OS Build 17763.9245)

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September 8, 2026—KB5122878 (OS Builds 19045.7725 and 19044.7725)

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September 8, 2026—KB5122880 (OS Build 22621.7582)

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September 8, 2026—KB5122882 (OS Build 20348.5622)

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September 8, 2026—KB5123065 (Monthly Rollup)

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September 8, 2026—KB5123066 (Monthly Rollup)

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September 8, 2026—KB5124008 (OS Builds 26200.9445 and 26100.9445)

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September 8, 2026—KB5124012 (OS Build 28000.2954)

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Description of the security update for Microsoft Exchange Server Subscription Edition RTM October 13, 2026 (KB5128895)

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Description of the security update for Microsoft Exchange Server 2019 CU14 October 13, 2026 (KB5128897)

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September 8, 2026—KB5123099 (OS Build 14393.9512)

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Description of the security update for Microsoft Exchange Server 2019 CU15 October 13, 2026 (KB5128896)

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Description of the security update for Microsoft Exchange Server 2016 CU23 October 13, 2026 (KB5128898)

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October 13, 2026-KB5127666 Cumulative Update for .NET Framework 3.5 and 4.7.2 for Windows 10, version 1809 and Windows Server 2019

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October 13, 2026-KB5127684 Cumulative Update for .NET Framework 4.8 for Windows 10, version 1607 and Windows Server 2016

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October 13, 2026-KB5127685 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10, version 1809 and Windows Server 2019

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October 13, 2026-Security and Quality Rollup for .NET Framework 4.8 for Windows Server 2012 (KB5127686)

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October 13, 2026-KB5127687 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows Server 2022

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October 13, 2026-Security and Quality Rollup for .NET Framework 4.8 for Windows Server 2012 R2 (KB5127688)

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October 13, 2026-KB5127690 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 24H2, Windows 11, version 25H2 and Microsoft server operating system 24H2

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October 13, 2026-KB5127691 Cumulative Update for .NET Framework 4.8.1 for Windows 11, version 26H1

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October 13, 2026-KB5127692 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11 23H2

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October 13, 2026-KB5127693 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows Server 2022

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October 13, 2026-KB5127694 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11 26H2

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October 13, 2026-KB5127696 Cumulative Update for .NET Framework 3.5 for Windows 11, version 26H1

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October 13, 2026—KB5127646 (OS Build 28000.3231)

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KB5128493 - Description of the security update for SQL Server 2022 GDR: October 13, 2026

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October 13, 2026—KB5126651 (OS Build 17763.9376)

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October 13, 2026—KB5126657 (OS Builds 19045.7807 and 19044.7807)

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October 13, 2026—KB5126646 (OS Build 26100.33650)

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Description of the security update for Office Online Server: October 13, 2026 (KB5002928)

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October 13, 2026-KB5127689 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 10 Version 21H2 and Windows 10 Version 22H2

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July 14, 2026—KB5099445 (Monthly Rollup)

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July 14, 2026—KB5101650 (OS Builds 26200.8875 and 26100.8875)

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July 14, 2026—KB5101649 (OS Build 28000.2525)

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July 14, 2026—KB5099539 (OS Builds 19045.7548 and 19044.7548)

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July 14, 2026—KB5099540 (OS Build 20348.5386)

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July 14, 2026—KB5099414 (OS Build 22631.7376)

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July 14, 2026—KB5099538 (OS Build 17763.9020)

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July 14, 2026—KB5099536 (OS Build 26100.33158)

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July 14, 2026—KB5099535 (OS Build 14393.9339)

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July 14, 2026—KB5099444 (Monthly Rollup)

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KB5128497 - Description of the security update for SQL Server 2017 GDR: October 13, 2026

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Description of Security Update for Microsoft Skype for Business Server 2015 CU13: October 13, 2026 (KB5132779)

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Description of Security Update for Microsoft Skype for Business Server 2019 CU8: October 13, 2026 (KB5131693)

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KB5126649: Servicing stack update for Windows 10, version 1607 and Windows Server 2016: October 13, 2026

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KB5127356: Servicing stack update for Windows Server 2012 R2: October 13, 2026

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KB5127357: Servicing stack update for Windows Server 2012: October 13, 2026

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Description of Security Update for Microsoft Skype for Business Server SE CU1: October 13, 2026 (KB5131692)

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