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Azure File Sync Agent V23.1 - September 2026

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

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

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

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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

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

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

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

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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 Applies To .NET Note 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...

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 Applies To .NET Note 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...

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

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

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

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

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

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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 Applies To .NET Note IMPORTANT This update was originally released in the Security and Quality Rollup that’s dated August 26, 2025. This...

September 9, 2025-KB5064403 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 22H2 and Windows 11, version 23H2

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July 8, 2025-KB5062064 Cumulative Update for .NET Framework 4.8 for Windows 10, version 1607 and Windows Server 2016

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April 25, 2025-KB5056579 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 24H2

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