Microsoft released Safe OS Dynamic Updates for Windows 11 and Windows 10 on May 12, 2026. These updates improve the Windows recovery environment, also known as WinRE. The updates are downloaded and installed automatically through Windows Update.
Updates target multiple Windows versions
The updates include several KB numbers that target different Windows versions. After installation, the WinRE version on a device will be updated to a specific build. For example, KB5089591 updates WinRE to version 10.0.28000.2110. KB5089593 updates it to 10.0.26100.8455. KB5087594 updates to 10.0.22621.7077. KB5087593 updates to 10.0.19041.7290. KB5087592 updates to 10.0.17763.8751. KB5087590 updates to 10.0.14393.9138.
The updates are available globally and were released on May 12, 2026. They are designed to be applied to existing Windows images before deployment.
Microsoft stated that the updates make improvements to the Windows recovery environment. The company has not confirmed any further details about the specific changes in these updates.
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