KB5124013: Overview with user sentiment and feedback

Overview

KB5124013 is a Safe OS Dynamic Update for Windows 11, version 26H1, released September 22, 2026, applying to all editions of that version. It updates the Windows Recovery Environment (WinRE) rather than the main OS. It replaces the earlier KB5124011, and after install the WinRE version should read 10.0.28000.3086.

General Purpose

• Improves the Windows Recovery Environment (WinRE) on Windows 11 26H1.
• Delivered automatically via Windows Update, WSUS, or the Microsoft Update Catalog.
• Supersedes KB5124011.
• No restart required; the update cannot be removed once applied to a Windows image.
• Verify success by confirming WinRE version 10.0.28000.3086.

General Sentiment

Little to no community discussion was found for this update, and the Microsoft documentation reports no known issues. The support page does flag the broader Secure Boot certificate expiration (starting June 2026), which is a separate concern worth planning for but not a defect in this patch.

Known Issues

Disclaimer: We take measures to ensure that AI-generated content is of the highest possible quality, but we cannot guarantee its accuracy and recommend that users do their own independent research. Generated on 2026-10-15 08:10 AM

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