May 12, 2026-KB5087077 Cumulative Update for .NET Framework 3.5 for Windows 11, version 26H1 (build 28000) and later

May 12, 2026-KB5087077 Cumulative Update for .NET Framework 3.5 for Windows 11, version 26H1 build 28000 and later Release Date: May 12, 2026 Version: .NET Framework 3.5 The May 12, 2026 update installs the complete .NET Framework 3.5 product for Windows 11, version 26H1 build version 28000 and...

2026-04 .NET Framework 3.5 Security Update (KB5084165)

2026-04 Cumulative Update for .NET Framework 3.5 for Windows 11, version 26H1 for arm64...

2025-10 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Microsoft server operating system version 21H2 for x64 (KB5066743)

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...

August 22, 2023-KB5029847 Cumulative Update Preview for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 22H2

August 22, 2023-KB5029847 Cumulative Update Preview for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 22H2 Release Date: August 22, 2023 Version: .NET Framework 3.5, 4.8 and 4.8.1 Summary This article describes the Cumulative Update for 3.5, 4.8 and 4.8.1 for Windows 10 Version 22H2...

October 11, 2022-KB5018544 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 21H1

October 11, 2022-KB5018544 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 21H1 Release Date: October 11, 2022 Version: .NET Framework 3.5, 4.8 and 4.8.1 IMPORTANT This update is included in the Cumulative Update that's dated October 11, 2022. Parts of this update...

September 20, 2022-KB5017858 Cumulative Update Preview for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 21H2

September 20, 2022-KB5017858 Cumulative Update Preview for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 21H2 Release Date: September 20, 2022 Version: .NET Framework 3.5, 4.8 and 4.8.1 Summary This article describes the Cumulative Update for 3.5, 4.8 and 4.8.1 for Windows 10 Version...

August 9, 2022-KB5015732 Cumulative Update Preview for .NET Framework 3.5 and 4.8 for Windows 11

August 9, 2022-KB5015732 Cumulative Update Preview for .NET Framework 3.5 and 4.8 for Windows 11 Release Date: August 9, 2022 Version: .NET Framework 3.5 and 4.8 The August 9, 2022 update for Windows 11 includes cumulative reliability improvements in .NET Framework 3.5 and 4.8. We recommend that...

April 21, 2022-KB5012796 Cumulative Update Preview for .NET Framework 3.5, 4.7.2 and 4.8 for Windows 10, version 1809 and Windows Server, version 2019

April 21, 2022-KB5012796 Cumulative Update Preview for .NET Framework 3.5, 4.7.2 and 4.8 for Windows 10, version 1809 and Windows Server, version 2019 Release Date: April 21, 2022 Version: .NET Framework 3.5, 4.7.2 and 4.8 Summary This article describes the Cumulative Update for 3.5, 4.7.2 and 4....

Security and Quality Rollup for .NET Framework 3.5, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 (KB4598501)

Security and Quality Rollup for .NET Framework 3.5, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows Server 2012 KB4598501 Applies to: Microsoft .NET Framework 3.5 Microsoft .NET Framework 4.5.2 Microsoft .NET Framework 4.6 Microsoft .NET Framework 4.6.1 Microsoft .NET Framework 4.6.2...

October 1, 2020-KB4576945 Cumulative Update Preview for .NET Framework 3.5 and 4.8 for Windows 10, version 2004 and Windows Server, version 2004

October 1, 2020-KB4576945 Cumulative Update Preview for .NET Framework 3.5 and 4.8 for Windows 10, version 2004 and Windows Server, version 2004 Release Date: October 1, 2020 Version: .NET Framework 3.5 and 4.8 The October 1, 2020 update for Windows 10, version 2004 and Windows Server, version 20...

Preview of Quality Rollup for .NET Framework 3.5, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows 8.1, RT 8.1, and Windows Server 2012 R2 (KB4538158)

Preview of Quality Rollup for .NET Framework 3.5, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8 for Windows 8.1, RT 8.1, and Windows Server 2012 R2 KB4538158 Applies to: Microsoft .NET Framework 3.5 Microsoft .NET Framework 4.5.2 Microsoft .NET Framework 4.6 Microsoft .NET Framework 4.6.1...

October 24, 2019-KB4522741 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 1903 and Windows Server 1903 RTM

October 24, 2019-KB4522741 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 1903 and Windows Server 1903 RTM Release Date: October 24, 2019 Version: .NET Framework 3.5 and 4.8 Summary This article describes the Cumulative Updates for 3.5 and 4.8 for Windows 10 Version 1903...

September 26, 2019 — KB4522739 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 version 1909 and Windows Server version 1909

September 26, 2019 — KB4522739 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 version 1909 and Windows Server version 1909 Release Date: September 26, 2019 Version: .NET Framework 3.5 and 4.8 Summary This article describes the September 26, 2019 update for 3.5 and 4.8 for Windows...

Security and Quality Rollup updates for .NET Framework 2.0 SP2, 3.0 SP2, 4.5.2, and 4.6 for Windows Server 2008 SP2 (KB 4459925)

Security and Quality Rollup updates for .NET Framework 2.0 SP2, 3.0 SP2, 4.5.2, and 4.6 for Windows Server 2008 SP2 KB 4459925 Notice This update is included in the Security and Quality Rollup that's dated October 9, 2018. This update was previously released as part of the Preview of Quality Roll...

May 2018 Preview of the Quality Rollups for .NET Framework 2.0 SP2, 3.0 SP2, 4.5.2, and 4.6 for Windows Server 2008 (KB 4103474)

May 2018 Preview of the Quality Rollups for .NET Framework 2.0 SP2, 3.0 SP2, 4.5.2, and 4.6 for Windows Server 2008 KB 4103474 Notice This update is included in the June 2018 Preview of the Quality Rollups for .NET Framework 2.0, 3.0, 4.5.2 and 4.6 for Windows Server 2008 KB 4291501. Parts of thi...

2020-08 Cumulative Update Preview for .NET Framework 3.5 and 4.8 for Windows 10 Version 1909 for x64 (KB4570723)

2020-08 Cumulative Update Preview for .NET Framework 3.5 and 4.8 for Windows 10 Version 1909 for x64 KB4570723...

2023-07 Cumulative Update for .NET Framework 3.5 and 4.8 for Microsoft server operating system, version 22H2 for x64 (KB5028935)

2023-07 Cumulative Update for .NET Framework 3.5 and 4.8 for Microsoft server operating system, version 22H2 for x64 KB5028935...

2023-10 Cumulative Update Preview for .NET Framework 3.5 and 4.8 for Windows 10 Version 22H2 for ARM64 (KB5031904)

2023-10 Cumulative Update Preview for .NET Framework 3.5 and 4.8 for Windows 10 Version 22H2 for ARM64 KB5031904...

2022-07 Cumulative Update Preview for .NET Framework 3.5 and 4.8 for Windows 11 for ARM64 (KB5015732)

2022-07 Cumulative Update Preview for .NET Framework 3.5 and 4.8 for Windows 11 for ARM64 KB5015732...

2026-05 Cumulative Update Preview for .NET Framework 3.5 and 4.8.1 for Windows 11, version 24H2 for x64 (KB5092430)

2026-05 Cumulative Update Preview for .NET Framework 3.5 and 4.8.1 for Windows 11, version 24H2 for x64 KB5092430...