Microsoft KB Catalog

Trending KBs

KB#Last UpdatedDescription
KB5127686Oct 21, 2026KB5127686 is the October 13, 2026 Security and Quality Rollup for .NET Framework 4.8 on Windows Server 2012, delivered as an Extended Security Update (ESU). Windows Server 2012 is past end of support, so this package is only relevant to…
KB5127664Oct 21, 2026KB5127664 is the October 13, 2026 Security and Quality Rollup for .NET Framework 3.5 on Windows Server 2012 R2, delivered as an Extended Security Update (ESU) since the OS reached end of support. It replaces KB5126148 and KB5121649. Affected systems…
KB5127649Oct 21, 2026KB5127649 is a Setup Dynamic Update for Windows 11, version 26H1, dated October 13, 2026. It addresses security vulnerabilities in Windows setup binaries and related files used during feature updates. It applies to all editions of Windows 11 26H1 and…
KB5128928Oct 21, 2026KB5128928 is a security and cumulative update for .NET Framework 3.5, 4.8 and 4.8.1 on Windows Server 2022, released October 13, 2026. It is delivered via Windows Update, WSUS (Security Updates classification), and the Microsoft Update Catalog. Companion per-version articles…
KB5126655Oct 21, 2026KB5126655 is the October 13, 2026 cumulative update for Windows Server 2022 (OS Build 20348.5761). It bundles security fixes and non-security changes from the September 2026 preview and out-of-band KB5129237, and ships with servicing stack update KB5126654 (20348.5739). The update…
See more KBs

NinjaOne’s Guide to SysAdmin Software

Read about the highest-rated solutions for IT professionals

Download the guide
SysAdmin Software Guide 2025 cover image
    1. October
    2. September
    3. August
    4. July
    5. June
    6. May
    7. April
    8. March
    9. February
    10. January
    1. December
    2. November
    3. October
    4. September
    5. August
    6. July
    7. June
    8. May
    9. April
    10. March
    11. February
    12. January
    1. December

All KBs

KB#Last UpdatedDescription
KB5126657Oct 21, 2026KB5126657 is the October 13, 2026 cumulative update for Windows 10 version 22H2 (and 21H2 on the same build line), delivering OS Builds 19045.7807 and 19044.7807. It targets Windows 10 devices still on supported servicing, including ESU-enrolled systems. The provided…
KB5126664Oct 21, 2026KB5126664 is a Safe OS Dynamic Update for Windows 10 version 1809 and Windows Server 2019, dated October 13, 2026. It updates the Windows Recovery Environment (WinRE) and replaces the previously released KB5122886. It is available only through the Microsoft…
KB5127666Oct 21, 2026KB5127666 is the October 13, 2026 cumulative update for .NET Framework 3.5 and 4.7.2 on Windows 10 version 1809 and Windows Server 2019. It is a security-focused .NET Framework update delivered via Windows Update, WSUS, and the Microsoft Update Catalog.…
KB5127688Oct 21, 2026KB5127688 is the October 13, 2026 Security and Quality Rollup for .NET Framework 4.8 on Windows Server 2012 R2, delivered as an Extended Security Update (ESU) since the OS reached end of support in October 2023. It replaces the earlier…
KB5130035Oct 21, 2026KB5130035 is the October 13, 2026 .NET 9.0 servicing update, which refreshes the .NET 9.0 runtime with the latest security fixes. It is offered via Microsoft Update on Windows client systems and via WSUS and the Microsoft Update Catalog on…
KB5130034Oct 21, 2026KB5130034 is the October 13, 2026 .NET 8.0 Update, refreshing the .NET 8.0 runtime to version 8.0.32 with security fixes. It is offered to systems with .NET 8.0 installed on supported Windows versions, delivered through Microsoft Update, WSUS, and the…
KB5127692Oct 21, 2026KB5127692 is a cumulative update for .NET Framework 3.5 and 4.8.1 on Windows 11 version 23H2, released October 13, 2026. It is delivered through Windows Update, WSUS, and the Microsoft Update Catalog, and applies to systems that have .NET Framework…
KB5128926Oct 21, 2026KB5128926 is a October 13, 2026 Security and Quality Rollup for .NET Framework 3.5, 4.6.2 through 4.8 on Windows Server 2012. It is delivered via Windows Update, WSUS, and the Microsoft Update Catalog. The package consolidates the per-version rollups KB5127660,…
KB5127690Oct 21, 2026KB5127690 is an October 13, 2026 cumulative update for .NET Framework 3.5 and 4.8.1. It targets Windows 11 version 24H2, Windows 11 version 25H2, and Windows Server 2025 (24H2). Its focus is security fixes for multiple .NET Framework CVEs.
KB5127668Oct 21, 2026KB5127668 is an October 13, 2026 Security and Quality Rollup for .NET Framework 4.6.2, 4.7, 4.7.1, and 4.7.2 on Windows Server 2012 R2 (Extended Security Updates). It replaces the earlier KB5126148 and KB5121649 rollups. Installation may fail on Azure Arc-enabled…
KB5129236Oct 21, 2026KB5129236 is an out-of-band cumulative update for Windows 10 22H2 and 21H2 (OS Builds 19045.7727 and 19044.7727), released September 14, 2026. It was issued outside the regular Patch Tuesday cycle, and the crawled page content is only the Microsoft Support…
KB5127685Oct 21, 2026KB5127685 is a security and reliability cumulative update for .NET Framework 3.5 and 4.8 on Windows 10 version 1809 and Windows Server 2019. Microsoft lists its release date as October 13, 2026. It applies only to systems with .NET Framework…
1 / 85
Ready to simplify work with unified IT?
Try NinjaOne Free
Explore Demos