Microsoft has re-released the Windows Recovery Environment (WinRE) update KB5075039 for Windows 10 on March 3, 2026. This update aims to address recovery environment issues that originated from a previous update in October 2025.
Background on Previous Issues
In October 2025, the dynamic security update KB5067039 introduced a faulty USBHUB3.SYS driver (version 10.0.26100.6891). This caused USB keyboards and mice to become unusable in WinRE. Microsoft acknowledged this problem on October 17, 2025.
Initial and Current Update Efforts
On January 15, 2026, Microsoft released recovery updates, including KB5075039, for Windows 10 versions 21H2 and 22H2. These updates were distributed via Windows Update and intended to apply the Safe OS Dynamic Update (KB5073933) to WinRE. However, the initial release did not fully resolve the issues.
On March 3, 2026, Microsoft re-released KB5073933 for Windows 10 versions 21H2, 22H2 ESU, and Windows 10 Enterprise LTSC 2021. According to Microsoft, this update addresses a WinRE bug that could prevent the recovery environment from starting when the October 14, 2025, WinRE update KB5068164 is installed.
Recommendations for Users
Users running Windows 10 version 22H2 with ESU support or LTSC 2021 are advised to install the March 3, 2026 update to ensure a functional recovery environment.
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