For those who may not know, dynamic updates deliver changes 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.
These Dynamic Update packages are meant to be applied to existing Windows images prior to their deployment. These packages include SafeOS updates for Windows Recovery Environment, corrections for Setup.exe binaries, and more. During the upgrade process, dynamic updates also aid in maintaining Language Pack (LP) and Features on Demand (FOD) content. For instance, VBScript is presently an FOD on Windows 11 24H2.
Both setup and recovery upgrades were issued, but only for version 24H2, and prior versions did not receive them. Windows Server 2025 is likewise covered by the updates. Below are the changelogs. Let's start with the setup update:
🆕 Latest Dynamic Updates (July 22, 2025)
📦 KB5062839 – Setup Dynamic Update
Applies to: Windows 11 version 24H2, Windows Server 2025
Summary: This update improves Windows setup binaries and files used during feature updates, helping ensure smoother and more reliable upgrade experiences.
The Safe OS recovery update comes next, and unlike the previous time, Microsoft has returned the general changelog without mentioning any specific fixes. It writes:
🛡️ KB5063689 – Safe OS Dynamic Update
Applies to: Windows 11 version 24H2, Windows Server 2025
Summary: General improvements to the Windows Recovery Environment (WinRE), enhancing system reliability during recovery scenarios.