Title Products Classification Last Updated Version Size          Download
2026-10 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5134140) Microsoft Server operating system-21H2 Updates 10/26/2026 n/a 639.7 MB 670809020
2026-10 Cumulative Update for Windows 10 Version 21H2 for x64-based Systems (KB5134125) Windows 10 LTSB Updates 10/26/2026 n/a 1006.4 MB 1055236145
2026-10 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 21H2 for x64 (KB5128924) Windows 10 LTSB Security Updates 10/13/2026 n/a 171.1 MB 179436394
2026-10 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 10 Version 21H2 for x64 (KB5127689) Windows 10 LTSB Security Updates 10/13/2026 n/a 92.9 MB 97461045
2026-10 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 21H2 for x64 (KB5127683) Windows 10 LTSB Security Updates 10/13/2026 n/a 78.2 MB 81975349
2026-10 Cumulative Update for Windows 10 Version 21H2 for x64-based Systems (KB5126657) Windows 10 LTSB Security Updates 10/13/2026 n/a 1179.1 MB 1236404149
2026-10 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Microsoft server operating system version 21H2 for x64 (KB5127693) Microsoft Server operating system-21H2 Security Updates 10/13/2026 n/a 92.1 MB 96575635
2026-10 Cumulative Update for .NET Framework 3.5 and 4.8 for Microsoft server operating system version 21H2 for x64 (KB5127687) Microsoft Server operating system-21H2 Security Updates 10/13/2026 n/a 76.4 MB 80119615
2026-10 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Microsoft server operating system version 21H2 for x64 (KB5128928) Microsoft Server operating system-21H2 Security Updates 10/13/2026 n/a 168.5 MB 176695250
2026-10 Cumulative Update for Microsoft server operating system version 21H2 for x64-based Systems (KB5126655) Microsoft Server operating system-21H2 Security Updates 10/13/2026 n/a 584.6 MB 612997918
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 Cumulative Update for Windows 10 Version 21H2 for x64-based Systems (KB5129236) Windows 10 LTSB Updates 9/14/2026 n/a 896.3 MB 939850337
2026-09 Dynamic Cumulative Update for Windows 10 Version 21H2 for x64-based Systems (KB5122878) Windows 10 and later GDR-DU Security Updates 9/8/2026 n/a 879.6 MB 922310707
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 .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, 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 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
2026-09 Cumulative Update for .NET Framework 3.5, 4.8 and 4.8.1 for Windows 10 Version 21H2 for x64 (KB5126145) Windows 10 LTSB Security Updates 9/8/2026 n/a 155.5 MB 163090294
2026-09 Cumulative Update for .NET Framework 3.5 and 4.8.1 for Windows 10 Version 21H2 for x64 (KB5126421) Windows 10 LTSB Security Updates 9/8/2026 n/a 77.5 MB 81247370
2026-09 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 21H2 for x64 (KB5126046) Windows 10 LTSB Security Updates 9/8/2026 n/a 78.1 MB 81842924
2026-09 Cumulative Update for Windows 10 Version 21H2 for x64-based Systems (KB5122878) Windows 10 LTSB Security Updates 9/8/2026 n/a 895.9 MB 939426194
2026-08 Dynamic Cumulative Update for Windows 10 Version 21H2 for x64-based Systems (KB5120249) Windows 10 and later GDR-DU Security Updates 8/11/2026 n/a 878.9 MB 921624505
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 .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
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