Windows Patch Tuesday Digest
2026-09-08 — 1 bulletin.
September 2026 Security Updates
| KB | Product | Channel | Supersedes | Verdict |
|---|---|---|---|---|
| 5122874 | Windows 10 Version 1607 for 32-bit Systems | b_release | First release | deploy now |
| 5123099 | Windows 10 Version 1607 for 32-bit Systems | b_release | 5120238 | deploy now |
| 5122874 | Windows 10 Version 1607 for x64-based Systems | b_release | First release | deploy now |
| 5123099 | Windows 10 Version 1607 for x64-based Systems | b_release | 5120238 | deploy now |
| 5122876 | Windows 10 Version 1809 for 32-bit Systems | b_release | 5120418 | deploy now |
| 5122876 | Windows 10 Version 1809 for x64-based Systems | b_release | 5120418 | deploy now |
| 5122878 | Windows 10 Version 21H2 for 32-bit Systems | b_release | 5120249 | deploy now |
| 5122878 | Windows 10 Version 21H2 for ARM64-based Systems | b_release | 5120249 | deploy now |
| 5122878 | Windows 10 Version 21H2 for x64-based Systems | b_release | 5120249 | deploy now |
| 5122878 | Windows 10 Version 22H2 for 32-bit Systems | b_release | 5120249 | deploy now |
| 5122878 | Windows 10 Version 22H2 for ARM64-based Systems | b_release | 5120249 | deploy now |
| 5122878 | Windows 10 Version 22H2 for x64-based Systems | b_release | 5120249 | deploy now |
| 5122880 | Windows 11 Version 23H2 for ARM64-based Systems | b_release | 5120240 | deploy now |
| 5122880 | Windows 11 Version 23H2 for x64-based Systems | b_release | 5120240 | deploy now |
| 5124008 | Windows 11 Version 24H2 for ARM64-based Systems | b_release | 5121003 | deploy now |
| 5124008 | Windows 11 Version 24H2 for x64-based Systems | b_release | 5121003 | deploy now |
| 5124008 | Windows 11 Version 25H2 for ARM64-based Systems | b_release | 5121003 | deploy now |
| 5124008 | Windows 11 Version 25H2 for x64-based Systems | b_release | 5121003 | deploy now |
| 5124012 | Windows 11 Version 26H1 for ARM64-based Systems | b_release | 5121000 | deploy now |
| 5129194 | Windows 11 Version 26H1 for ARM64-based Systems | b_release | 5124012 | deploy now |
| 5124012 | Windows 11 version 26H1 for x64-based Systems | b_release | 5121000 | deploy now |
| 5129194 | Windows 11 version 26H1 for x64-based Systems | b_release | 5124012 | deploy now |
| 5123065 | Windows Server 2012 | b_release | 5099445 | deploy now |
| 5123066 | Windows Server 2012 R2 | b_release | 5099444 | deploy now |
| 5122874 | Windows Server 2016 | b_release | First release | deploy now |
| 5123099 | Windows Server 2016 | b_release | 5120238 | deploy now |
| 5122876 | Windows Server 2019 | b_release | 5120418 | deploy now |
| 5122882 | Windows Server 2022 | b_release | 5120242 | deploy now |
| 5122871 | Windows Server 2025 | b_release | 5120233 | deploy now |