Title Products Classification Last Updated Version Size          Download
2025-10 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Microsoft server operating system version 24H2 for x64 (KB5066131) Microsoft Server Operating System-24H2 Security Updates 10/14/2025 n/a 71.6 MB 75061732
2025-10 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 24H2 for x64 (KB5066131) Windows 11 Security Updates 10/14/2025 n/a 71.6 MB 75061732
2025-10 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 24H2 for arm64 (KB5066131) Windows 11 Security Updates 10/14/2025 n/a 88.2 MB 92441087
2025-10 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 10 Version 21H2 for x64 (KB5066130) Windows 10 LTSB Security Updates 10/14/2025 n/a 75.7 MB 79401999
2025-10 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 10 Version 22H2 for x64 (KB5066130) Windows 10, version 1903 and later Security Updates 10/14/2025 n/a 75.7 MB 79401999
2025-10 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 25H2 for x64 (KB5066128) Windows 11 Security Updates 10/14/2025 n/a 89.6 MB 93924631
2025-10 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 22H2 (KB5066747) Windows 10, version 1903 and later Security Updates 10/14/2025 n/a 94.8 MB 99384201
2025-10 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 23H2 for x64 (KB5066133) Windows 11 Security Updates 10/14/2025 n/a 72.4 MB 75936570
2025-10 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 21H2 (KB5066746) Windows 10 LTSB Security Updates 10/14/2025 n/a 94.8 MB 99384201
2025-10 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Microsoft server operating system version 24H2 for arm64 (KB5066131) Microsoft Server Operating System-24H2 Security Updates 10/14/2025 n/a 88.2 MB 92441087
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) Microsoft Server operating system-21H2 Security Updates 10/14/2025 n/a 145.0 MB 152003191
2025-10 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 23H2 for arm64 (KB5066133) Windows 11 Security Updates 10/14/2025 n/a 89.3 MB 93617616
2025-10 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 22H2 for x64 (KB5066747) Windows 10, version 1903 and later Security Updates 10/14/2025 n/a 151.9 MB 159295662
2025-10 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 25H2 for arm64 (KB5066128) Windows 11 Security Updates 10/14/2025 n/a 107.7 MB 112979879
2025-10 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Microsoft server operating system, version 23H2 for x64 (KB5066129) Microsoft Server Operating System-23H2 Security Updates 10/14/2025 n/a 71.5 MB 74931540
2025-10 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 10 Version 21H2 (KB5066130) Windows 10 LTSB Security Updates 10/14/2025 n/a 47.1 MB 49395959
2025-10 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 21H2 for x64 (KB5066746) Windows 10 LTSB Security Updates 10/14/2025 n/a 151.9 MB 159295662
2025-10 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 22H2 for arm64 (KB5066133) Windows 11 Security Updates 10/14/2025 n/a 89.3 MB 93617616
2025-10 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 10 Version 22H2 (KB5066130) Windows 10, version 1903 and later Security Updates 10/14/2025 n/a 47.1 MB 49395959
2025-10 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Microsoft server operating system version 21H2 for x64 (KB5066134) Microsoft Server operating system-21H2 Security Updates 10/14/2025 n/a 72.4 MB 75869904
2025-10 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 22H2 for x64 (KB5066133) Windows 11 Security Updates 10/14/2025 n/a 72.4 MB 75936570
2025-09 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 25H2 for x64 (KB5066613) Windows 11 Updates 9/30/2025 n/a 89.6 MB 93929041
2025-09 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 25H2 for arm64 (KB5066613) Windows 11 Updates 9/30/2025 n/a 107.7 MB 112979708
2025-09 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 11, version 22H2 for x64 (KB5064403) Windows 11 Updates 9/9/2025 n/a 72.4 MB 75939312
2025-09 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 10 Version 21H2 (KB5064400) Windows 10 LTSB Updates 9/9/2025 n/a 47.1 MB 49418691
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