Earlier this week, Microsoft released Patch Tuesday updates for Windows 11 and Windows 10 under KB5055523/ KB5055528 and KB5055518, KB5055519/ KB5055521/ KB5055547, respectively. Following that, Microsoft also released out-of-band updates under KB5058919 / KB5058922 / KB5058921 for both Windows versions in order to fix a Group Policy-related bug for enterprises.
The tech giant also published Dynamic updates for all supported Windows 11 versions, namely 24H2, 23H2, and 22H2. They also apply to Windows Server 2025.
Dynamic updates bring improvements to the Windows Recovery in the form of Windows Recovery Environment (WinRE) updates, also called Safe OS updates, as well as to the Setup binaries in the form of Setup updates. This time, though, no Setup update has been released.
Microsoft writes:
KB5055671: Safe OS Dynamic Update for Windows 11, version 24H2 and Server 2025: April 8, 2025
Summary
This update makes improvements to the Windows recovery environment in Windows 11, version 24H2 and Windows Server 2025.
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KB5056789: Safe OS Dynamic Update for Windows 11, version 22H2 and 23H2: April 8, 2025
Summary
This update makes improvements to the Windows recovery environment in Windows 11, version 22H2 and Windows 11, version 23H2.
For those who may not be aware, these Dynamic Update packages are meant to be applied to existing Windows images prior to their deployment. In a Tech Community blog post about Windows 10 Dynamic Updates, Microsoft explained Dynamic Updates in more detail regarding its various components and uses. These packages include fixes to Setup.exe binaries, SafeOS updates for Windows Recovery Environment, and more:
As soon as a Windows 10 feature update initiates, whether from media or a Windows Update service-connected environment, Dynamic Update is one of the first steps invoked. Windows 10 Setup reaches out to an Internet-facing URL hosted by Microsoft to fetch Dynamic Update content, then applies those updates to your OS installation media.
Content acquired includes:
- Setup Updates: Fixes to Setup binaries or any files that Setup uses for feature updates.
- Safe OS Updates: Fixes for the "safe OS" that are used to update Windows recovery environment (WinRE).
In addition to these updates, Dynamic Update will preserve Language Pack (LP) and Features on Demand (FODs) content during the upgrade process. These are not updates to LPs and FODs, but reacquisition to ensure the user has these elements present with the update completes.
You can also avail of the WinRE updates manually on the Microsoft Update Catalog website at the following links: KB5055671 / KB5056789, but they are delivered automatically via the Windows Update channel.
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