May 26, 2026-KB5092427 Cumulative Update Preview for .NET Framework 3.5 and 4.8.1 for Windows 11, version 25H2

May 26, 2026-KB5092427 Cumulative Update Preview for .NET Framework 3.5 and 4.8.1 for Windows 11, version 25H2 Release Date: May 26, 2026 Version: .NET Framework 3.5 and 4.8.1 The May 26, 2026 update for Windows 11, version 25H2 includes security and cumulative reliability improvements in .NET...

May 12, 2026-KB5087068 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows Server 2022

May 12, 2026-KB5087068 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows Server 2022 Release Date: May 12, 2026 Version: .NET Framework 3.5 and 4.8 The May 12, 2026 update for Windows Server 2022 includes security and cumulative reliability improvements in .NET Framework 3.5 and 4.8. W...

May 12, 2026-KB5087055 Cumulative Update for .NET Framework 4.8.1 for Windows 11, version 26H1

May 12, 2026-KB5087055 Cumulative Update for .NET Framework 4.8.1 for Windows 11, version 26H1 Release Date: May 12, 2026 Version: .NET Framework 4.8.1 The May 12, 2026 update for Windows 11, version 26H1 includes security and cumulative reliability improvements in .NET Framework 4.8.1. We...

April 14, 2026-KB5082419 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 10 Version 21H2 and Windows 10 Version 22H2

April 14, 2026-KB5082419 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 10 Version 21H2 and Windows 10 Version 22H2 Revised April 22, 2026: Revised on April 22nd, 2026 to add the known issue section. Release Date: April 14, 2026 Version: .NET Framework 3.5 and 4.8.1 The April 14,...

April 14, 2026-KB5082414 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10, version 1809 and Windows Server 2019

April 14, 2026-KB5082414 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10, version 1809 and Windows Server 2019 Release Date: April 14, 2026 Version: .NET Framework 3.5 and 4.8 The April 14, 2026 update for Windows 10, version 1809 and Windows Server 2019 includes security and...

April 14, 2026-KB5082424 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 23H2

April 14, 2026-KB5082424 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 23H2 Release Date: April 14, 2026 Version: .NET Framework 3.5 and 4.8.1 The April 14, 2026 update for Windows 11, version 23H2 includes security and cumulative reliability improvements in .NET...

April 14, 2026-KB5082411 Cumulative Update for .NET Framework 4.8 for Windows 10, version 1607 and Windows Server 2016

April 14, 2026-KB5082411 Cumulative Update for .NET Framework 4.8 for Windows 10, version 1607 and Windows Server 2016 Release Date: April 14, 2026 Version: .NET Framework 4.8 The April 14, 2026 update for Windows 10, version 1607 and Windows Server 2016 includes security and cumulative reliabili...

April 14, 2026-KB5082426 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 21H2 and Windows 10 Version 22H2

April 14, 2026-KB5082426 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 21H2 and Windows 10 Version 22H2 Revised April 22, 2026: Revised on April 22nd, 2026 to add the known issue section. Release Date: April 14, 2026 Version: .NET Framework 3.5 and 4.8 The April 14, 2026...

April 14, 2026-KB5082427 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows Server 2022

April 14, 2026-KB5082427 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows Server 2022 Release Date: April 14, 2026 Version: .NET Framework 3.5 and 4.8 The April 14, 2026 update for Windows Server 2022 includes security and cumulative reliability improvements in .NET Framework 3.5 and...

April 14, 2026-KB5082417 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 25H2 and Microsoft server operating system 24H2

April 14, 2026-KB5082417 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 25H2 and Microsoft server operating system 24H2 Release Date: April 14, 2026 Version: .NET Framework 3.5 and 4.8.1 The April 14, 2026 update for Windows 11, version 25H2 and Microsoft server...

April 14, 2026-KB5082420 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 24H2

April 14, 2026-KB5082420 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 24H2 Release Date: April 14, 2026 Version: .NET Framework 3.5 and 4.8.1 The April 14, 2026 update for Windows 11, version 24H2 includes security and cumulative reliability improvements in .NET...

April 14, 2026-KB5082418 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Microsoft server operating system, version 23H2

April 14, 2026-KB5082418 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Microsoft server operating system, version 23H2 Release Date: April 14, 2026 Version: .NET Framework 3.5 and 4.8.1 The April 14, 2026 update for Microsoft server operating system, version 23H2 includes security and...

April 14, 2026-Security and Quality Rollup for .NET Framework 4.8 for Windows Server 2012 (KB5082403)

April 14, 2026-Security and Quality Rollup for .NET Framework 4.8 for Windows Server 2012 KB5082403 Applies to: Microsoft .NET Framework 4.8 Important The installation of this Extended Security Update ESU might fail when you try to install it on an Azure Arc-enabled device that is running Windows...

April 14, 2026-Security and Quality Rollup for .NET Framework 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 (KB5084069)

April 14, 2026-Security and Quality Rollup for .NET Framework 3.5, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 KB5084069 Applies to: Microsoft .NET Framework 3.5 Microsoft .NET Framework 4.6.2 Microsoft .NET Framework 4.7 Microsoft .NET Framework 4.7.1 Microsoft .NET Framework 4.7.2...

April 14, 2026-KB5084071 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows Server 2022

April 14, 2026-KB5084071 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows Server 2022 Release Date: April 14, 2026 Version: .NET Framework 3.5, 4.8 and 4.8.1 Summary This article describes the security and cumulative update for 3.5, 4.8 and 4.8.1 for Windows Server 2022. Securi...

April 14, 2026-KB5084068 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 22H2

April 14, 2026-KB5084068 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 22H2 Release Date: April 14, 2026 Version: .NET Framework 3.5, 4.8 and 4.8.1 Summary This article describes the security and cumulative update for 3.5, 4.8 and 4.8.1 for Windows 10 Version 22H2...

March 10, 2026—Hotpatch KB5079420 (OS Builds 26200.7979 and 26100.7979)

March 10, 2026—Hotpatch KB5079420 OS Builds 26200.7979 and 26100.7979 This Hotpatch update for Windows 11, version 25H2 and 24H2 KB5079420, improves functionality, performance, and reliability. To learn more about differences between security updates, optional non-security preview updates,...

February 10, 2026-KB5074837 Cumulative Update for .NET Framework 4.8.1 for Windows 11, version 26H1

February 10, 2026-KB5074837 Cumulative Update for .NET Framework 4.8.1 for Windows 11, version 26H1 Release Date: February 10, 2026 Version: .NET Framework 4.8.1 The February 10, 2026 update for Windows 11, version 26H1 includes security and cumulative reliability improvements in .NET Framework...

December 9, 2025—Hotpatch KB5071413 (OS Build 20348.4467)

December 9, 2025—Hotpatch KB5071413 OS Build 20348.4467 This Hotpatch update for Windows Server 2022 KB5071413, improves functionality, performance, and reliability. To learn more about differences between security updates, optional non-security preview updates, out-of-band OOB updates, and...

August 28, 2025-KB5064401 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 24H2 and Microsoft server operating system version 24H2

August 28, 2025-KB5064401 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 24H2 and Microsoft server operating system version 24H2 IMPORTANT This update was originally released in the Security and Quality Rollup that’s dated August 26, 2025. This update is included in th...