Microsoft Releases Windows 11 Recovery Updates KB5128977 and KB5130881

Microsoft has released four new Dynamic Updates for Windows 11 versions 26H1, 25H2, and 26H2. The October 28, 2026, updates address security vulnerabilities in Windows Setup and improve the Windows Recovery Environment (WinRE).

Microsoft says the updates will download and install automatically through Windows Update.

Windows 11 26H1 receives two updates

Microsoft has released two Dynamic Updates for Windows 11 version 26H1.

• KB5129651 (Setup Dynamic Update) fixes security vulnerabilities in Windows Setup binaries and files used during feature updates.
• KB5127652 (Safe OS Dynamic Update) improves the Windows Recovery Environment, which helps users troubleshoot and recover their systems.

After installing KB5127652, the WinRE version should be 10.0.28000.3364.

Windows 11 25H2 and 26H2 get similar improvements

Windows 11 versions 25H2 and 26H2 also receive two updates targeting setup security and recovery.

• KB5128977 (Setup Dynamic Update) addresses security vulnerabilities in Windows Setup binaries and files used during feature updates.
• KB5130881 (Safe OS Dynamic Update) introduces improvements to the Windows Recovery Environment.

After installing KB5130881, the WinRE version should be 10.0.26100.9817.

What do Windows 11 Dynamic Updates do?

Dynamic Updates help improve Windows installation, feature upgrades, and system recovery.

Setup Dynamic Updates focus on Windows Setup components, including security fixes for files used during installation and upgrades. Safe OS Dynamic Updates improve WinRE, which provides troubleshooting and recovery tools when Windows encounters problems.

Administrators can also apply these updates to existing Windows images before deployment.

Microsoft distributes the latest Setup and Safe OS Dynamic Updates automatically through Windows Update, so users do not need to install them manually.

In other news, Microsoft recently released a Windows 11 Insider Experimental (Future Platforms) build, the latest Windows 11 Beta 26H1 build with smarter Search, and a new Windows 11 Experimental build with upgraded Search features.

Via Neowin