Microsoft released Windows 11 version 23H2 this week. And while the ISOs have been available since the announcement, the official Microsoft Media Creation Tool is still not able to download the update. When inquired about the matter, the company confirmed that it still needed "optimization" and would be ready next week.
Regardless, the company released dynamic updates that improve the compatibility of the Windows Recovery Environment (WinRE) for Windows 11 23H2. The updates also apply to 22H2 as well. This makes sense as the new feature update is mostly the same at the core system files level.
Microsoft writes in its support article:
KB5031894: Compatibility update for installing and recovering Windows 11, version 22H2: October 26, 2023
Summary
This update makes improvements to the Windows recovery features for Windows 11, version 22H2.
KB5031476: Compatibility update for installing and recovering Windows 11, version 22H2: October 10, 2023
Summary
This update makes improvements to the Windows recovery features for Windows 11, version 22H2.
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).
- Servicing Stack Updates: Fixes that are necessary to address the Windows 10 servicing stack issue and thus required to complete the feature update.
- Latest Cumulative Update: Installs the latest cumulative quality update.
- Driver Updates: Latest version of applicable drivers that have already been published by manufacturers into Windows Update and specifically targeted for Dynamic Update.
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.
The updates are available from the Microsoft Update Catalog website at the following links: KB5031894 / KB5031476.