Title Products Classification Last Updated Version Size          Download
2026-09 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5129237) Microsoft Server operating system-21H2 Updates 9/14/2026 n/a 560.0 MB 587185449
2026-09 Dynamic Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5122889) Windows 10 and later Dynamic Update, Windows Safe OS Dynamic Update Critical Updates 9/8/2026 n/a 141.5 MB 148363436
2026-09 Dynamic Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5126031) Windows 10 and later Dynamic Update Critical Updates 9/8/2026 n/a 17.3 MB 18187610
2026-09 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Microsoft server operating system version 21H2 for x64 (KB5126149) Microsoft Server operating system-21H2 Security Updates 9/8/2026 n/a 152.5 MB 159920972
2026-09 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Microsoft server operating system version 21H2 for x64 (KB5126422) Microsoft Server operating system-21H2 Security Updates 9/8/2026 n/a 76.2 MB 79944499
2026-09 Cumulative Update for .NET Framework 3.5 and 4.8 for Microsoft server operating system version 21H2 for x64 (KB5126050) Microsoft Server operating system-21H2 Security Updates 9/8/2026 n/a 76.3 MB 79976473
2026-09 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5122882) Microsoft Server operating system-21H2 Security Updates 9/8/2026 n/a 562.6 MB 589944414
2026-08 Dynamic Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5120243) Windows 10 and later Dynamic Update Critical Updates 8/11/2026 n/a 17.3 MB 18177581
2026-08 Dynamic Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5120251) Windows 10 and later Dynamic Update, Windows Safe OS Dynamic Update Critical Updates 8/11/2026 n/a 149.3 MB 156586370
2026-08 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Microsoft server operating system version 21H2 for x64 (KB5121650) Microsoft Server operating system-21H2 Security Updates 8/11/2026 n/a 152.5 MB 159932505
2026-08 Cumulative Update for .NET Framework 3.5 and 4.8 for Microsoft server operating system version 21H2 for x64 (KB5120705) Microsoft Server operating system-21H2 Security Updates 8/11/2026 n/a 76.3 MB 79979694
2026-08 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Microsoft server operating system version 21H2 for x64 (KB5120714) Microsoft Server operating system-21H2 Security Updates 8/11/2026 n/a 76.2 MB 79952811
2026-08 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5120242) Microsoft Server operating system-21H2 Security Updates 8/11/2026 n/a 580.1 MB 608290854
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
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