Title Products Classification Last Updated Version Size          Download
2026-07 Dynamic Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5099552) Windows 10 and later Dynamic Update, Windows Safe OS Dynamic Update Critical Updates 7/14/2026 n/a 147.3 MB 154504199
2026-07 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Microsoft server operating system version 21H2 for x64 (KB5102206) Microsoft Server operating system-21H2 Security Updates 7/14/2026 n/a 152.6 MB 159971620
2026-07 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Microsoft server operating system version 21H2 for x64 (KB5101005) Microsoft Server operating system-21H2 Security Updates 7/14/2026 n/a 76.2 MB 79891518
2026-07 Cumulative Update for .NET Framework 3.5 and 4.8 for Microsoft server operating system version 21H2 for x64 (KB5101010) Microsoft Server operating system-21H2 Security Updates 7/14/2026 n/a 76.4 MB 80080102
2026-07 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5099540) Microsoft Server operating system-21H2 Security Updates 7/14/2026 n/a 573.2 MB 601026757
2026-06 Dynamic Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5094157) Windows 10 and later Dynamic Update, Windows Safe OS Dynamic Update Critical Updates 6/9/2026 n/a 126.4 MB 132521197
2026-06 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5094128) Microsoft Server operating system-21H2 Security Updates 6/9/2026 n/a 541.4 MB 567747281
2026-05 Dynamic Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5087595) Windows 10 and later Dynamic Update, Windows Safe OS Dynamic Update Critical Updates 5/12/2026 n/a 120.6 MB 126429307
2026-05 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Microsoft server operating system version 21H2 for x64 (KB5087059) Microsoft Server operating system-21H2 Security Updates 5/12/2026 n/a 74.5 MB 78123122
2026-05 Cumulative Update for .NET Framework 3.5 and 4.8 for Microsoft server operating system version 21H2 for x64 (KB5087068) Microsoft Server operating system-21H2 Security Updates 5/12/2026 n/a 74.6 MB 78255445
2026-05 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Microsoft server operating system version 21H2 for x64 (KB5088862) Microsoft Server operating system-21H2 Security Updates 5/12/2026 n/a 149.1 MB 156378567
2026-05 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5087545) Microsoft Server operating system-21H2 Security Updates 5/12/2026 n/a 539.4 MB 565567533
2026-04 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5091575) Microsoft Server operating system-21H2 Updates 4/19/2026 n/a 516.2 MB 541269806
2026-04 Dynamic Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5082243) Windows 10 and later Dynamic Update, Windows Safe OS Dynamic Update Critical Updates 4/14/2026 n/a 114.5 MB 120039754
2026-04 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Microsoft server operating system version 21H2 for x64 (KB5082425) Microsoft Server operating system-21H2 Security Updates 4/14/2026 n/a 74.5 MB 78129614
2026-04 Cumulative Update for .NET Framework 3.5 and 4.8 for Microsoft server operating system version 21H2 for x64 (KB5082427) Microsoft Server operating system-21H2 Security Updates 4/14/2026 n/a 74.6 MB 78230710
2026-04 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Microsoft server operating system version 21H2 for x64 (KB5084071) Microsoft Server operating system-21H2 Security Updates 4/14/2026 n/a 149.1 MB 156360324
2026-04 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5082142) Microsoft Server operating system-21H2 Security Updates 4/14/2026 n/a 515.8 MB 540859310
2026-03 Dynamic Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5079518) Windows 10 and later Dynamic Update Critical Updates 3/10/2026 n/a 17.3 MB 18106103
2026-03 Dynamic Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5078822) Windows 10 and later Dynamic Update, Windows Safe OS Dynamic Update Critical Updates 3/10/2026 n/a 28.2 MB 29600472
2026-03 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5078766) Microsoft Server operating system-21H2 Security Updates 3/10/2026 n/a 499.4 MB 523660670
2026-02 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5082314) Microsoft Server operating system-21H2 Updates 3/2/2026 n/a 413.0 MB 433051920
2026-02 Dynamic Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5075915) Windows 10 and later Dynamic Update, Windows Safe OS Dynamic Update Critical Updates 2/10/2026 n/a 22.7 MB 23778675
2026-02 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5075906) Microsoft Server operating system-21H2 Security Updates 2/10/2026 n/a 412.4 MB 432394998
2026-01 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5078136) Microsoft Server operating system-21H2 Updates 1/24/2026 n/a 413.6 MB 433696310
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