Microsoft released KB5072537, KB5071416, KB5072543 Windows 11 Setup & Recovery updates

This past week, Microsoft released the December 2025 Patch Tuesday updates for Windows 11 (KB5072033, KB5071417) and Windows 10 (KB5071546, KB5071544, KB5071543). The new Windows 11 25H2 and 24H2 updates are also being pushed via the Media Creation Tool.

The company also announced that it was beginning to roll out Windows 11 25H2 to all supported user PCs including on Windows 10. Microsoft explained how this could be done by switching a toggle.

Microsoft released corresponding new dynamic updates too alongside the Patch Tuesday updates. For those who may not know, dynamic updates bring improvements to the Windows Recovery process in the form of Windows Recovery Environment (WinRE) updates, which are also called Safe OS updates. The dynamic updates also affect the Setup file binaries in the form of Setup updates.

These Dynamic Update packages are meant to be applied to existing Windows images prior to their deployment. These packages include fixes to Setup.exe binaries, SafeOS updates for Windows Recovery Environment, and more. Dynamic Updates also help preserve Language Pack (LP) and Features on Demand (FODs) content during the upgrade process. VBScript, for example, is currently an FOD on Windows 11 24H2. Both setup and recovery updates were released this time. Microsoft writes:

"KB5072537: Safe OS Dynamic Update for Windows 11, version 24H2 and 25H2, and Windows Server 2025: December 9, 2025

This update makes improvements to the Windows recovery environment (WinRE).

KB5071416: Setup Dynamic Update for Windows 11, version 23H2: December 9, 2025

This update makes improvements to Windows setup binaries or any files that setup uses for feature updates in Windows 11, version 23H2.

KB5072543: Safe OS Dynamic Update for Windows 11, version 23H2: December 9, 2025

This update makes improvements to the Windows recovery environment (WinRE)."

Microsoft notes that both the Recovery updates will be downloaded and installed automatically via the Windows Update channel. You can also avail both of them on Microsoft's Update Catalog website: KB5072537, KB5071416, KB5072543.

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Posted Sunday 14 December 2025 at 11:53 am AEST (my time).

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