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Windows Updates

What's new in each Windows 11 cumulative update and feature release: what changed, what to expect, and whether to install it.

24 guides · Page 2 of 2

Older guides, page 2

  • Windows UpdatesBuild 26300.9032

    What's new in the Windows 11 Insider builds for 25 September 2026

    The recent Windows 11 Insider preview releases focus on Build 26300.9032 for the Experimental channel, bringing features like activity-driven search indexing expansion, Phone Link notification previews in the Start menu, and an updated adaptive hibernate policy. This release also includes a critical flight certificate renewal and fixes for File Explorer, Start menu crashes, and SMB backups. Insiders can download the update directly through Windows Insider settings.

    Maya Reyes

  • Windows UpdatesWindows 11 version 25H2

    What's new in KB5124010 (Windows 11 build 26200.9550)

    KB5124010 is an optional preview update released on September 22, 2026, for Windows 11 version 25H2 and version 24H2, bringing systems to OS Builds 26200.9550 and 26100.9550. As a non-security release, it delivers preliminary quality updates and fixes ahead of the upcoming monthly patch cycle. You can install it manually through Windows Update or download the standalone package directly from the Microsoft Update Catalog.

    Priya Natarajan

  • Windows UpdatesWindows 11, version 26H2

    What's new in the Windows 11 Insider builds for 18 September 2026

    The latest Windows 11 Insider preview builds introduce a redesigned File Explorer context menu, support for Emoji 17.0, and automatic Wi-Fi profile reuse in the Windows Recovery Environment (WinRE). These updates also include modern toolbar updates for Magnifier, phone notifications in the Start menu, and the removal of the WMIC command-line tool.

    Maya Reyes

  • Windows UpdatesWindows 11 version 24H2

    What's new in KB5129195 (Windows 11 build 26200.9457)

    KB5129195 is an out-of-band update released on September 14, 2026, for Windows 11 version 24H2 and version 25H2. It advances systems to OS Build 26200.9457 and Build 26100.9457 to address key fixes following the previous update cycle. You can download it directly through Windows Update or from the Microsoft Update Catalog.

    Priya Natarajan

  • Windows UpdatesWindows 11 version 23H2

    What's new in KB5129242 (Windows 11 build 22631.7584)

    KB5129242 is an out-of-band update released by Microsoft on September 14, 2026, for Windows 11 version 23H2. It updates the operating system to OS Build 22631.7584. The release is delivered outside of the standard monthly Patch Tuesday schedule to address targeted system servicing requirements.

    Maya Reyes

  • Windows UpdatesWindows 11, version 26H2

    What's new in the Windows 11 Insider builds for 11 September 2026

    The latest Windows 11 Insider Preview releases for September 2026 introduce a redesigned WinUI AutoPlay experience, individual privacy permissions for desktop applications, and an automatic window maximization accessibility toggle. These updates also streamline lock screen widgets and expand inline message previews in the Start menu. Insiders in the Experimental channel can download builds such as Build 26340.9233 and Build 26300.9032 directly via Windows Update.

    Priya Natarajan

  • Windows UpdatesWindows 11 version 24H2 (OS Build 26100.9445)

    What's new in KB5124008 (Windows 11 build 26100.9445)

    KB5124008 is a mandatory security update released on September 8, 2026, for Windows 11 version 24H2 and version 25H2. It updates system build numbers to 26100.9445 and 26200.9445 while delivering core security maintenance, stability fixes, and cumulative improvements. Users can install it through Windows Update or download standalone packages from the Microsoft Update Catalog.

    Maya Reyes

  • Windows UpdatesWindows 11, version 26H2

    What's new in the Windows 11 Insider builds for 8 September 2026

    The September 2026 Windows 11 Insider updates for the Experimental channel bring Build 26340.9212 and Build 26340.9233. Key highlights include individual desktop app privacy controls, a modernized WinUI AutoPlay dialog, automatic Wi-Fi profile reuse in WinRE, and a redesigned File Explorer context menu.

    Maya Reyes

  • Windows UpdatesWindows 11 version 26H1

    What's new in KB5124012 (Windows 11 build 28000.2954)

    KB5124012 is a mandatory Patch Tuesday update released on September 8, 2026, for Windows 11 version 26H1, bringing systems to OS Build 28000.2954. It provides essential security patches, servicing stack fixes, and general background stability improvements. You can install it via Settings > Windows Update or by downloading the installer directly from the Microsoft Update Catalog.

    Priya Natarajan

  • Windows UpdatesWindows 11 version 24H2 (OS Build 26100.9445)

    What's new in KB5124008 (Windows 11 build 26200.9445)

    KB5124008 is a mandatory security update released on September 8, 2026, for Windows 11 version 24H2 and version 25H2, advancing systems to OS builds 26100.9445 and 26200.9445. It combines core security fixes with cumulative quality improvements rolled over from the previous preview update, KB5120998. You can download it directly via Windows Update or manually through the Microsoft Update Catalog.

    Priya Natarajan

  • Windows UpdatesWindows 11, version 23H2

    What's new in KB5078883 (Windows 11 build 22631.6783)

    KB5078883 is a cumulative quality update released on March 10, 2026, for devices running Windows 11, version 23H2. Installing this update advances your operating system build to OS Build 22631.6783. It delivers monthly servicing updates, maintenance patches, and system improvements directly through Windows Update.

    Maya Reyes

  • Windows UpdatesWindows 11, version 25H2

    What's new in KB5120998 (Windows 11 build 26100.9278)

    KB5120998 is an optional preview update released on August 27, 2026, for Windows 11 version 24H2 and version 25H2. It updates your system to OS Build 26100.9278 or OS Build 26200.9278, bringing non-security fixes, quality refinements, and system reliability improvements ahead of the next scheduled monthly update. You can install it manually through Windows Update under optional updates.

    Priya Natarajan