Safe OS Dynamic Updates
Recovery environment updates, tracked separately from Windows cumulative and Setup Dynamic Updates.
SafeOS updates service the Windows recovery environment (WinRE) used during recovery and feature updates. They can include security fixes and reliability improvements. A catalog classification of Critical Updates is not a CVE severity rating.
Installation channels, prerequisites, replacement information and the need to update installation media vary by KB. Always check the Microsoft deployment guidance and the relevant support article. This listing does not assess whether a device's WinRE is patched.
Package history
714 packages · 262 KB articles · Last successful refresh: . Automatic discovery every 6 hours. Microsoft Update Catalog source
714 matching packages. Each row is a catalog package; the same KB can apply to multiple versions and architectures.
Release date and package build come from the KB article when available. Catalog revised is Microsoft's catalog revision date, not the original release date. Missing article details are explicitly marked and retried automatically.
| Product / version | Architecture | KB / details | Release date | Catalog revised | Package build | Catalog |
|---|---|---|---|---|---|---|
| Windows 10 22H2 | x64 |
KB5059607
Details2025-05 Dynamic Update for Windows 10 Version 22H2 for x64-based Systems (KB5059607) This update makes improvements to the Windows recovery environment (WinRE) in Windows 10, version 21H2 and Windows 10, version 22H2. Classification: Critical Updates. Size: 10.9 MB. |
2025-05-13 | 2025-05-13 | Not available |
Package / download |
| Windows 10 22H2 | x86 |
KB5059607
Details2025-05 Dynamic Update for Windows 10 Version 22H2 for x86-based Systems (KB5059607) This update makes improvements to the Windows recovery environment (WinRE) in Windows 10, version 21H2 and Windows 10, version 22H2. Classification: Critical Updates. Size: 5.7 MB. |
2025-05-13 | 2025-05-13 | Not available |
Package / download |
| Microsoft server operating system 23H2 | x64 |
KB5060119
Details2025-05 Safe OS Dynamic Update for Microsoft server operating system version 23H2 for x64-based Systems (KB5060119) This update makes improvements to the Windows recovery environment (WinRE) in Windows Server, version 23H2. Classification: Critical Updates. Size: 6.0 MB. |
2025-05-13 | 2025-05-13 | Not available |
Package / download |
| Windows 11 24H2 | arm64 |
KB5057781
Details2025-04 Safe OS Dynamic Update for Windows 11 Version 24H2 for arm64-based Systems (KB5057781) This update makes improvements to the Windows recovery environment in Windows 11, version 24H2 and Windows Server 2025. This update resolves the following issue: Classification: Critical Updates. Size: 12.4 MB. |
2025-04-25 | 2025-04-25 | Not available |
Package / download |
| Windows 11 24H2 | x64 |
KB5057781
Details2025-04 Safe OS Dynamic Update for Windows 11 Version 24H2 for x64-based Systems (KB5057781) This update makes improvements to the Windows recovery environment in Windows 11, version 24H2 and Windows Server 2025. This update resolves the following issue: Classification: Critical Updates. Size: 10.5 MB. |
2025-04-25 | 2025-04-25 | Not available |
Package / download |
| Windows 11 22H2 | arm64 |
KB5059281
Details2025-04 Safe OS Dynamic Update for Windows 11 Version 22H2 for arm64-based Systems (KB5059281) This update makes improvements to the Windows recovery environment in Windows 11, version 22H2 and Windows 11, version 23H2. Classification: Critical Updates. Size: 24.6 MB. |
2025-04-22 | 2025-04-22 | Not available |
Package / download |
| Windows 11 22H2 | x64 |
KB5059281
Details2025-04 Safe OS Dynamic Update for Windows 11 Version 22H2 for x64-based Systems (KB5059281) This update makes improvements to the Windows recovery environment in Windows 11, version 22H2 and Windows 11, version 23H2. Classification: Critical Updates. Size: 22.6 MB. |
2025-04-22 | 2025-04-22 | Not available |
Package / download |
| Windows 11 23H2 | arm64 |
KB5059281
Details2025-04 Safe OS Dynamic Update for Windows 11 Version 23H2 for arm64-based Systems (KB5059281) This update makes improvements to the Windows recovery environment in Windows 11, version 22H2 and Windows 11, version 23H2. Classification: Critical Updates. Size: 24.6 MB. |
2025-04-22 | 2025-04-22 | Not available |
Package / download |
| Windows 11 23H2 | x64 |
KB5059281
Details2025-04 Safe OS Dynamic Update for Windows 11 Version 23H2 for x64-based Systems (KB5059281) This update makes improvements to the Windows recovery environment in Windows 11, version 22H2 and Windows 11, version 23H2. Classification: Critical Updates. Size: 22.6 MB. |
2025-04-22 | 2025-04-22 | Not available |
Package / download |
| Windows 10 1507 | x64 |
KB5055770
Details2025-04 Dynamic Update for Windows 10 Version 1507 for x64-based Systems (KB5055770) This update makes improvements to the Windows recovery environment (WinRE) in Windows 10, version 1507. Classification: Critical Updates. Size: 18.1 MB. |
2025-04-09 | 2025-04-09 | Not available |
Package / download |
| Windows 10 1507 | x86 |
KB5055770
Details2025-04 Dynamic Update for Windows 10 Version 1507 for x86-based Systems (KB5055770) This update makes improvements to the Windows recovery environment (WinRE) in Windows 10, version 1507. Classification: Critical Updates. Size: 14.9 MB. |
2025-04-09 | 2025-04-09 | Not available |
Package / download |
| Microsoft server operating system 24H2 | x64 |
KB5055671
Details2025-04 Safe OS Dynamic Update for Microsoft server operating system version 24H2 for x64-based Systems (KB5055671) This update makes improvements to the Windows recovery environment in Windows 11, version 24H2 and Windows Server 2025. Classification: Critical Updates. Size: 9.6 MB. |
2025-04-08 | 2025-04-08 | Not available |
Package / download |
| Windows 11 24H2 | arm64 |
KB5055671
Details2025-04 Safe OS Dynamic Update for Windows 11 Version 24H2 for arm64-based Systems (KB5055671) This update makes improvements to the Windows recovery environment in Windows 11, version 24H2 and Windows Server 2025. Classification: Critical Updates. Size: 11.8 MB. |
2025-04-08 | 2025-04-08 | Not available |
Package / download |
| Windows 11 24H2 | x64 |
KB5055671
Details2025-04 Safe OS Dynamic Update for Windows 11 Version 24H2 for x64-based Systems (KB5055671) This update makes improvements to the Windows recovery environment in Windows 11, version 24H2 and Windows Server 2025. Classification: Critical Updates. Size: 9.6 MB. |
2025-04-08 | 2025-04-08 | Not available |
Package / download |
| Windows 10 21H2 | arm64 |
KB5055674
Details2025-04 Dynamic Update for Windows 10 Version 21H2 for ARM64-based Systems (KB5055674) This update makes improvements to the Windows recovery environment (WinRE) in Windows 10, version 21H2 and Windows 10, version 22H2. Classification: Critical Updates. Size: 13.8 MB. |
2025-04-08 | 2025-04-08 | Not available |
Package / download |
| Windows 10 21H2 | x64 |
KB5055674
Details2025-04 Dynamic Update for Windows 10 Version 21H2 for x64-based Systems (KB5055674) This update makes improvements to the Windows recovery environment (WinRE) in Windows 10, version 21H2 and Windows 10, version 22H2. Classification: Critical Updates. Size: 10.7 MB. |
2025-04-08 | 2025-04-08 | Not available |
Package / download |
| Windows 10 21H2 | x86 |
KB5055674
Details2025-04 Dynamic Update for Windows 10 Version 21H2 for x86-based Systems (KB5055674) This update makes improvements to the Windows recovery environment (WinRE) in Windows 10, version 21H2 and Windows 10, version 22H2. Classification: Critical Updates. Size: 5.5 MB. |
2025-04-08 | 2025-04-08 | Not available |
Package / download |
| Windows 10 22H2 | arm64 |
KB5055674
Details2025-04 Dynamic Update for Windows 10 Version 22H2 for ARM64-based Systems (KB5055674) This update makes improvements to the Windows recovery environment (WinRE) in Windows 10, version 21H2 and Windows 10, version 22H2. Classification: Critical Updates. Size: 13.8 MB. |
2025-04-08 | 2025-04-08 | Not available |
Package / download |
| Windows 10 22H2 | x64 |
KB5055674
Details2025-04 Dynamic Update for Windows 10 Version 22H2 for x64-based Systems (KB5055674) This update makes improvements to the Windows recovery environment (WinRE) in Windows 10, version 21H2 and Windows 10, version 22H2. Classification: Critical Updates. Size: 10.7 MB. |
2025-04-08 | 2025-04-08 | Not available |
Package / download |
| Windows 10 22H2 | x86 |
KB5055674
Details2025-04 Dynamic Update for Windows 10 Version 22H2 for x86-based Systems (KB5055674) This update makes improvements to the Windows recovery environment (WinRE) in Windows 10, version 21H2 and Windows 10, version 22H2. Classification: Critical Updates. Size: 5.5 MB. |
2025-04-08 | 2025-04-08 | Not available |
Package / download |
| Microsoft server operating system 23H2 | x64 |
KB5055767
Details2025-04 Safe OS Dynamic Update for Microsoft server operating system version 23H2 for x64-based Systems (KB5055767) This update makes improvements to the Windows recovery environment (WinRE) in Windows Server, version 23H2. Classification: Critical Updates. Size: 4.7 MB. |
2025-04-08 | 2025-04-08 | Not available |
Package / download |
| Windows 10 1607 | x64 |
KB5055768
Details2025-04 Dynamic Update for Windows 10 Version 1607 for x64-based Systems (KB5055768) This update makes improvements to the Windows recovery environment (WinRE) in Windows 10, version 1607 and Windows Server 2016. Classification: Critical Updates. Size: 18.6 MB. |
2025-04-08 | 2025-04-08 | Not available |
Package / download |
| Windows 10 1607 | x86 |
KB5055768
Details2025-04 Dynamic Update for Windows 10 Version 1607 for x86-based Systems (KB5055768) This update makes improvements to the Windows recovery environment (WinRE) in Windows 10, version 1607 and Windows Server 2016. Classification: Critical Updates. Size: 15.7 MB. |
2025-04-08 | 2025-04-08 | Not available |
Package / download |
| Windows 10 1809 | x64 |
KB5055769
Details2025-04 Dynamic Update for Windows 10 Version 1809 for x64-based Systems (KB5055769) This update makes improvements to the Windows recovery environment (WinRE) in Windows 10, version 1809 and Windows Server 2019. Classification: Critical Updates. Size: 7.6 MB. |
2025-04-08 | 2025-04-08 | Not available |
Package / download |
| Windows 10 1809 | x86 |
KB5055769
Details2025-04 Dynamic Update for Windows 10 Version 1809 for x86-based Systems (KB5055769) This update makes improvements to the Windows recovery environment (WinRE) in Windows 10, version 1809 and Windows Server 2019. Classification: Critical Updates. Size: 4.4 MB. |
2025-04-08 | 2025-04-08 | Not available |
Package / download |
| Microsoft server operating system | x64 |
KB5055771
Details2025-04 Dynamic Update for Microsoft server operating system for x64-based Systems (KB5055771) This update makes improvements to the Windows recovery environment in Azure Local, version 22H2 and Windows Server 2022. Classification: Critical Updates. Size: 10.9 MB. |
2025-04-08 | 2025-04-08 | Not available |
Package / download |
| Microsoft server operating system 22H2 | x64 |
KB5055771
Details2025-04 Dynamic Update for Microsoft server operating system, version 22H2 for x64-based Systems (KB5055771) This update makes improvements to the Windows recovery environment in Azure Local, version 22H2 and Windows Server 2022. Classification: Critical Updates. Size: 10.9 MB. |
2025-04-08 | 2025-04-08 | Not available |
Package / download |
| Windows 11 22H2 | arm64 |
KB5056789
Details2025-04 Safe OS Dynamic Update for Windows 11 Version 22H2 for arm64-based Systems (KB5056789) This update makes improvements to the Windows recovery environment in Windows 11, version 22H2 and Windows 11, version 23H2. Classification: Critical Updates. Size: 24.4 MB. |
2025-04-08 | 2025-04-08 | Not available |
Package / download |
| Windows 11 22H2 | x64 |
KB5056789
Details2025-04 Safe OS Dynamic Update for Windows 11 Version 22H2 for x64-based Systems (KB5056789) This update makes improvements to the Windows recovery environment in Windows 11, version 22H2 and Windows 11, version 23H2. Classification: Critical Updates. Size: 21.9 MB. |
2025-04-08 | 2025-04-08 | Not available |
Package / download |
| Windows 11 23H2 | arm64 |
KB5056789
Details2025-04 Safe OS Dynamic Update for Windows 11 Version 23H2 for arm64-based Systems (KB5056789) This update makes improvements to the Windows recovery environment in Windows 11, version 22H2 and Windows 11, version 23H2. Classification: Critical Updates. Size: 24.4 MB. |
2025-04-08 | 2025-04-08 | Not available |
Package / download |
| Windows 11 23H2 | x64 |
KB5056789
Details2025-04 Safe OS Dynamic Update for Windows 11 Version 23H2 for x64-based Systems (KB5056789) This update makes improvements to the Windows recovery environment in Windows 11, version 22H2 and Windows 11, version 23H2. Classification: Critical Updates. Size: 21.9 MB. |
2025-04-08 | 2025-04-08 | Not available |
Package / download |
| Windows 11 24H2 | arm64 |
KB5054686
Details2025-03 Safe OS Dynamic Update for Windows 11 Version 24H2 for arm64-based Systems (KB5054686) This update makes improvements to the Windows recovery environment in Windows 11, version 24H2 and Windows Server 2025. Classification: Critical Updates. Size: 10.6 MB. |
2025-03-27 | 2025-03-27 | Not available |
Package / download |
| Windows 11 24H2 | x64 |
KB5054686
Details2025-03 Safe OS Dynamic Update for Windows 11 Version 24H2 for x64-based Systems (KB5054686) This update makes improvements to the Windows recovery environment in Windows 11, version 24H2 and Windows Server 2025. Classification: Critical Updates. Size: 8.7 MB. |
2025-03-27 | 2025-03-27 | Not available |
Package / download |
| Windows 11 22H2 | arm64 |
KB5054059
Details2025-03 Safe OS Dynamic Update for Windows 11 Version 22H2 for arm64-based Systems (KB5054059) This update makes improvements to the Windows recovery environment in Windows 11, version 22H2 and Windows 11, version 23H2. Classification: Critical Updates. Size: 23.4 MB. |
2025-03-25 | 2025-03-25 | Not available |
Package / download |
| Windows 11 22H2 | x64 |
KB5054059
Details2025-03 Safe OS Dynamic Update for Windows 11 Version 22H2 for x64-based Systems (KB5054059) This update makes improvements to the Windows recovery environment in Windows 11, version 22H2 and Windows 11, version 23H2. Classification: Critical Updates. Size: 21.1 MB. |
2025-03-25 | 2025-03-25 | Not available |
Package / download |
| Windows 11 23H2 | arm64 |
KB5054059
Details2025-03 Safe OS Dynamic Update for Windows 11 Version 23H2 for arm64-based Systems (KB5054059) This update makes improvements to the Windows recovery environment in Windows 11, version 22H2 and Windows 11, version 23H2. Classification: Critical Updates. Size: 23.4 MB. |
2025-03-25 | 2025-03-25 | Not available |
Package / download |
| Windows 11 23H2 | x64 |
KB5054059
Details2025-03 Safe OS Dynamic Update for Windows 11 Version 23H2 for x64-based Systems (KB5054059) This update makes improvements to the Windows recovery environment in Windows 11, version 22H2 and Windows 11, version 23H2. Classification: Critical Updates. Size: 21.1 MB. |
2025-03-25 | 2025-03-25 | Not available |
Package / download |
| Windows 11 24H2 | arm64 |
KB5053143
Details2025-02 Safe OS Dynamic Update for Windows 11 Version 24H2 for arm64-based Systems (KB5053143) This update makes improvements to the Windows recovery environment in Windows 11, version 24H2 and Windows Server 2025. Classification: Critical Updates. Size: 7.2 MB. |
2025-02-25 | 2025-02-25 | Not available |
Package / download |
| Windows 11 24H2 | x64 |
KB5053143
Details2025-02 Safe OS Dynamic Update for Windows 11 Version 24H2 for x64-based Systems (KB5053143) This update makes improvements to the Windows recovery environment in Windows 11, version 24H2 and Windows Server 2025. Classification: Critical Updates. Size: 5.4 MB. |
2025-02-25 | 2025-02-25 | Not available |
Package / download |
| Microsoft server operating system 24H2 | x64 |
KB5053143
Details2025-03 Safe OS Dynamic Update for Microsoft server operating system version 24H2 for x64-based Systems (KB5053143) This update makes improvements to the Windows recovery environment in Windows 11, version 24H2 and Windows Server 2025. Classification: Critical Updates. Size: 5.4 MB. |
2025-02-25 | 2025-03-11 | Not available |
Package / download |
| Windows 11 22H2 | arm64 |
KB5052424
Details2025-02 Safe OS Dynamic Update for Windows 11 Version 22H2 for arm64-based Systems (KB5052424) This update makes improvements to the Windows recovery environment in Windows 11, version 22H2 and Windows 11, version 23H2. Classification: Critical Updates. Size: 22.6 MB. |
2025-02-11 | 2025-02-11 | Not available |
Package / download |
| Windows 11 22H2 | x64 |
KB5052424
Details2025-02 Safe OS Dynamic Update for Windows 11 Version 22H2 for x64-based Systems (KB5052424) This update makes improvements to the Windows recovery environment in Windows 11, version 22H2 and Windows 11, version 23H2. Classification: Critical Updates. Size: 20.2 MB. |
2025-02-11 | 2025-02-11 | Not available |
Package / download |
| Windows 11 23H2 | arm64 |
KB5052424
Details2025-02 Safe OS Dynamic Update for Windows 11 Version 23H2 for arm64-based Systems (KB5052424) This update makes improvements to the Windows recovery environment in Windows 11, version 22H2 and Windows 11, version 23H2. Classification: Critical Updates. Size: 22.6 MB. |
2025-02-11 | 2025-02-11 | Not available |
Package / download |
| Windows 11 23H2 | x64 |
KB5052424
Details2025-02 Safe OS Dynamic Update for Windows 11 Version 23H2 for x64-based Systems (KB5052424) This update makes improvements to the Windows recovery environment in Windows 11, version 22H2 and Windows 11, version 23H2. Classification: Critical Updates. Size: 20.2 MB. |
2025-02-11 | 2025-02-11 | Not available |
Package / download |
| Microsoft server operating system 24H2 | x64 |
KB5053426
Details2025-02 Safe OS Dynamic Update for Microsoft server operating system version 24H2 for x64-based Systems (KB5053426) This update makes improvements to the Windows recovery environment in Windows 11, version 24H2 and Windows Server 2025. Classification: Critical Updates. Size: 4.3 MB. |
2025-02-11 | 2025-02-11 | Not available |
Package / download |
| Windows 11 24H2 | arm64 |
KB5053426
Details2025-02 Safe OS Dynamic Update for Windows 11 Version 24H2 for arm64-based Systems (KB5053426) This update makes improvements to the Windows recovery environment in Windows 11, version 24H2 and Windows Server 2025. Classification: Critical Updates. Size: 6.0 MB. |
2025-02-11 | 2025-02-11 | Not available |
Package / download |
| Windows 11 24H2 | x64 |
KB5053426
Details2025-02 Safe OS Dynamic Update for Windows 11 Version 24H2 for x64-based Systems (KB5053426) This update makes improvements to the Windows recovery environment in Windows 11, version 24H2 and Windows Server 2025. Classification: Critical Updates. Size: 4.3 MB. |
2025-02-11 | 2025-02-11 | Not available |
Package / download |
| Windows 11 24H2 | arm64 |
KB5053117
Details2025-01 Safe OS Dynamic Update for Windows 11 Version 24H2 for arm64-based Systems (KB5053117) This update makes improvements to the Windows recovery environment in Windows 11, version 24H2 and Windows Server 2025. Classification: Critical Updates. Size: 5.3 MB. |
2025-01-28 | 2025-01-28 | Not available |
Package / download |
| Windows 11 24H2 | x64 |
KB5053117
Details2025-01 Safe OS Dynamic Update for Windows 11 Version 24H2 for x64-based Systems (KB5053117) This update makes improvements to the Windows recovery environment in Windows 11, version 24H2 and Windows Server 2025. Classification: Critical Updates. Size: 3.8 MB. |
2025-01-28 | 2025-01-28 | Not available |
Package / download |
| Microsoft server operating system 23H2 | x64 |
KB5050118
Details2025-01 Safe OS Dynamic Update for Microsoft server operating system version 23H2 for x64-based Systems (KB5050118) This update makes improvements to the Windows recovery environment in Windows Server, version 23H2. Classification: Critical Updates. Size: 0.7 MB. |
2025-01-14 | 2025-01-14 | Not available |
Package / download |
Programmatic access: GET /api/WindowsVersions/safeos. See API access and authentication.