Microsoft releases Windows 11 KB5081494, KB5083482 setup and recovery updates

This week Microsoft released new dynamic updates for Windows 11. 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. 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.

This time, both setup and recovery updates were released. The company writes:

"KB5083990: Setup Dynamic Update for Windows 11, version 26H1: March 26, 2026

This update makes improvements to Windows setup binaries or any files that setup uses for feature updates in Windows 11, version 26H1.

KB5081151: Safe OS Dynamic Update for Windows 11, version 26H1: March 26, 2026

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

KB5081494: Setup Dynamic Update for Windows 11, version 24H2 and 25H2: March 26, 2026

This update makes improvements to Windows setup binaries or any files that setup uses for feature updates in Windows 11, version 24H2 and Windows 11, version 25H2.

KB5083482: Safe OS Dynamic Update for Windows 11, versions 24H2 and 25H2: March 26, 2026

This update makes improvements to the Windows recovery environment (WinRE). The following is a summary of the improvement that this update addresses when you install this update.

• [Kernel] Fixed: An issue that prevented x64 applications from running under emulation on ARM64 in the Windows Recovery Environment (WinRE)."

Microsoft notes that both the Recovery and Setup updates will be downloaded and installed automatically via the Windows Update channel.